Your body gives off important signals about your health every... Show more
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Molly.issa
10/12/2025
Health & Social Care
Health indectors
204
•
10 Dec 2025
•
Key Health Indicators
M
Molly.issa
@molly.issa
1 / 3
Body Mass Index (BMI)
BMI is basically a quick way to figure out if your weight is healthy for your height. It's calculated using a simple formula that gives you a number in kg/m², and this number tells you which weight category you fall into.
The categories are pretty straightforward: underweight is below 18.5, healthy weight sits between 18.5-24.9, overweight ranges from 25-29.9, obese is 30-39.9, and seriously obese is 40 and above. These ranges help doctors assess your health risks quickly.
When your BMI is too high, you might notice short-term problems like getting out of breath easily or having joint pain. The scary stuff happens long-term though - think heart attacks and type 2 diabetes.
Low BMI brings its own troubles. Short-term, you'll probably feel tired all the time and get sick more often because your immune system isn't getting what it needs. Long-term risks include slow growth (especially important for teens) and fertility problems later in life.
Quick Tip: BMI isn't perfect - it doesn't account for muscle mass, so very athletic people might show as "overweight" even when they're perfectly healthy!
Blood Pressure
Think of blood pressure as measuring how hard your blood pushes against your artery walls as it travels around your body. It's written as two numbers , and these readings tell doctors a lot about your heart health.
The ranges are worth memorising: ideal blood pressure is 120/80 to 90/60, pre-high is 120/80 to 140/90, high blood pressure is 140/90 or above, and low is 90/60 or lower. Your doctor will always check this because it's such a reliable indicator of future health problems.
High blood pressure is nicknamed the "silent killer" because you often don't feel symptoms until it's too late. Long-term, it seriously increases your risk of heart disease, stroke, and kidney disease - all life-threatening conditions.
Low blood pressure might sound better, but it can make you feel dizzy and weak. It's sometimes linked to diabetes or can be a side effect of certain medications.
Reality Check: High blood pressure often runs in families, but your lifestyle choices (diet, exercise, stress management) can make a huge difference in preventing it!
Resting Heart Rate
Your resting heart rate is simply how many times your heart beats per minute when you're completely relaxed. Most adults have a rate between 60-100 beats per minute, and anything significantly outside this range could signal health issues.
Athletes often have lower resting heart rates (sometimes in the 40s or 50s) because their hearts are super efficient. However, if your rate is unusually high or low without being fit, it's worth investigating.
Short-term symptoms of abnormal heart rates include dizziness, chest pain, and feeling lightheaded. These symptoms are your body's way of telling you something isn't quite right with your cardiovascular system.
The long-term risks are serious business: heart attacks, strokes, and chronic high blood pressure can all stem from consistently abnormal heart rates. The good news is that regular exercise can help regulate your heart rate naturally.
Pro Tip: Check your resting heart rate first thing in the morning before getting out of bed - this gives you the most accurate reading since you're completely relaxed!
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This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
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Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
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Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
Key Health Indicators
M
Molly.issa
@molly.issa
Your body gives off important signals about your health every day, and doctors use specific measurements called health indicators to check how well you're doing. Understanding BMI, blood pressure, and heart rate can help you spot potential health issues early... Show more
Body Mass Index (BMI)
BMI is basically a quick way to figure out if your weight is healthy for your height. It's calculated using a simple formula that gives you a number in kg/m², and this number tells you which weight category you fall into.
The categories are pretty straightforward: underweight is below 18.5, healthy weight sits between 18.5-24.9, overweight ranges from 25-29.9, obese is 30-39.9, and seriously obese is 40 and above. These ranges help doctors assess your health risks quickly.
When your BMI is too high, you might notice short-term problems like getting out of breath easily or having joint pain. The scary stuff happens long-term though - think heart attacks and type 2 diabetes.
Low BMI brings its own troubles. Short-term, you'll probably feel tired all the time and get sick more often because your immune system isn't getting what it needs. Long-term risks include slow growth (especially important for teens) and fertility problems later in life.
Quick Tip: BMI isn't perfect - it doesn't account for muscle mass, so very athletic people might show as "overweight" even when they're perfectly healthy!
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Blood Pressure
Think of blood pressure as measuring how hard your blood pushes against your artery walls as it travels around your body. It's written as two numbers , and these readings tell doctors a lot about your heart health.
The ranges are worth memorising: ideal blood pressure is 120/80 to 90/60, pre-high is 120/80 to 140/90, high blood pressure is 140/90 or above, and low is 90/60 or lower. Your doctor will always check this because it's such a reliable indicator of future health problems.
High blood pressure is nicknamed the "silent killer" because you often don't feel symptoms until it's too late. Long-term, it seriously increases your risk of heart disease, stroke, and kidney disease - all life-threatening conditions.
Low blood pressure might sound better, but it can make you feel dizzy and weak. It's sometimes linked to diabetes or can be a side effect of certain medications.
Reality Check: High blood pressure often runs in families, but your lifestyle choices (diet, exercise, stress management) can make a huge difference in preventing it!
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Resting Heart Rate
Your resting heart rate is simply how many times your heart beats per minute when you're completely relaxed. Most adults have a rate between 60-100 beats per minute, and anything significantly outside this range could signal health issues.
Athletes often have lower resting heart rates (sometimes in the 40s or 50s) because their hearts are super efficient. However, if your rate is unusually high or low without being fit, it's worth investigating.
Short-term symptoms of abnormal heart rates include dizziness, chest pain, and feeling lightheaded. These symptoms are your body's way of telling you something isn't quite right with your cardiovascular system.
The long-term risks are serious business: heart attacks, strokes, and chronic high blood pressure can all stem from consistently abnormal heart rates. The good news is that regular exercise can help regulate your heart rate naturally.
Pro Tip: Check your resting heart rate first thing in the morning before getting out of bed - this gives you the most accurate reading since you're completely relaxed!
We thought you’d never ask...
What is the Knowunity AI companion?
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
Where can I download the Knowunity app?
You can download the app from Google Play Store and Apple App Store.
Is Knowunity really free of charge?
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
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Most popular content in Health & Social Care
Most popular content
English - inspector calls quotes and analysis
Quotes from every main character
English Literature10
Can't find what you're looking for? Explore other subjects.
Students love us — and so will you.
4.9/5
App Store
4.8/5
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user