My daughter, who is coming up to be 7 years old, loves swimming and has recently started race training. She is the youngest/smallest/thinnest of all the children in the group. Her technique is pretty good in all 4 strokes (better than some of the older children), but she lacks the stamina, endurance and general body strength to keep up with the others and as such she's finding the pool-training quite harsh.
She already swims as often as is reasonably possible - 3 sessions a week training plus one or two swims with me where we just have fun in the local pool. The coaches have suggested she does 5 days training , but this would a) be difficult for us logistically, and b) I think it's too much for her at this age. One of her former instructors in group lessons at our local pool advised extreme caution with pushing her too hard at this age.
She plays football once a week for an hour, and does Tai-kwon-do for another hour, and generally she is quite an active child.
So I am wondering what are the best exercises that can be done at home that would help her endurance, stamina and general physical preparedness/strength.
FYI, at the moment I just let her do what exercises she enjoys at home - which are sit-ups, press-ups, star jumps, wheel-barrows with her brother up stairs, hand stands, walking hand stands (she's just started to try this), and a few exercises with little 2.5Kg dumbbells (curls, shoulder presses, lunges and side bends) - as and when she feels like it....