Most people start to face new issues at the ages of 11-13 some may gain this at older ages, but it typically starts around that time, some causes of this are: Puberty;School; Problems at home; etc.
I felt like that before..
I say it's normal. It's all part of growing up.
Everything's going to be okay!
We got your back! <D
Answer:
A healthy mindset
Explanation:
When organising a exercise plan you should know whats best for your body.