If not.

You can do a single exercise.

This is just the usual repression. ...

Actually, in my opinion,

High jump is good, you can practice leg strength, as well as your own bounce and flexibility. If you are in the growing period, it will also help you grow taller.

Leg press is fine before bed.

Leg press can keep the legs from deforming, and science shows that leg press can prevent osteoporosis. ...

Maybe it's wrong, but I am. I read it online. Thank you! ~