I’m pretty sure it’s the second period. I think that’s when most of the development happens
I would say hat now is the perfect time because peak bone mass happens at our age. Bone strengthening exercises are always good for your body no matter what, so encourage her/him to do it. I'm guessing the age is about 11-18 maybe...
Hope this helps... mark as Brainliest plz
Maybe when they do more caring and nonverbal expressions??
Um no the higher is better endurance and preformability... if that makes sense
