I think either first or second grade
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
2,000 calories
hope this helps!
plz give brainliest answer!
It's part of the brain stem,
