Question

When should someone start working on bone strenght?

Answer 1

You should always try to keep your bones strong and healthy, building up the calcium by drinking milk will help keep them strong. After a bone is broken and is mostly healed you should start working on bone strength to make up for the time it had been rested.

Answer 2

when you  see the negative results of not working  your bones and also if you notice your strength in your bones  isn't as strong as they once was.