my friends parents did this to him when we were younger, they'd make him run... he became one hell of an athlete...
idk man, seems as others have said, they may think of working out as a bad thing... on the otherhand, it could introduce them to something they love and maybe exercising will become a part of their life...
not that im in anyway one to answer this (being 16 and all), but they seem to young for a punishment like this (not sure of ages, but guessing from info earlier in thread).
with a maybe 10 year old, i think this could be a good punishment. it gives them time to blow off steam. maybe make them exercise for a certain amount of time, dont stand over them, just make sure they arent doing something else.
idk if what i said makes sense, just my .02
I <3 front squats