I have a 4.8 year old boy.
Anything i (or anyone else) can do, Sporticus can do faster, better, higher, braver, for longer. Sporticus is very strong.
"You're not that strong, are you Mummy!"
No, dear. No, I'm not. I may be fabulous at changing wet sheets twice a night, then cleaning up vomit from your brother without waking you on the other side of the room, controlling you both in supermarkets, making nice food on a budget, spotting that Vimto makes you badly behaved, making sure you have Christmas Presents, convincing you that automatic doors are controlled by dormice, and explaining that we eat fruit to make us do 'normous poos ...
But no, I'm afraid I cannot show you how to do one handed press ups like Sporticus. Sorry, son.