Body flexibility is the correct answer:)
The most important thing in my opinion to stay healthy is to diet and exercise.
False. You should incorporate many different areas of fitness. You may focus on running, but you should try other things like yoga, cross fit, etc. This can help you keep all parts of your body fit and healthy.
I hope this helps!
It is a part of weber's law and if you need any help they have a bunch of quizlet stuff on this subject