My husband & I are trying to get into a fitness routine at home & our son, age 8, wants to join in. I am very happy about this, but are there limits to what he should be allowed to do? I am reluctant to hand over the weights for curls, etc. I don't want him to injure himself! I want to to encourage his interest in fitness, so we let him stretch out with us & he does the situps & push ups with us. He is healthy, though a bit weak in upper body strength, & pretty active.