Anonymous wrote:3 x weekly. Eight year olds do not have the mature sweat glands that adults do. And daily bathing/showering in winter time can actually be destructive to skin.
My 6 year old son gets stinky armpits if he doesn't wash them nightly. It isn't at the point where it smells through the shirt...but when he is pulling off the shirt the odor is foul. If you were to pick up the shirt and put your nose anywhere near the armhole it is offensive. He is a very athletic, active kid and he, no, he is not in precocious puberty, etc.
We do nightly baths for both of my boys (3 and 6) as part of their nighttime routine. 6 year old is capable of washing himself--hair, body, etc...while I help younger sibling.