If you've twisted it or turned it, you know how an injured ankle can ache.
Ankle sprains are the most common sports injury, and one of the most neglected.
My son is 13 years old and active in various sports. He is interested in strength training but has asked me if lifting weights will stunt his growth at this age. The possibility is indeed there, but remote. There will be plenty of time to do this in later teen and early adult years. A professional shows him how to do each exercise.