>>76808461 (OP)
Ernie shavers had the number one punching power is said to have gotten it from chopping wood.
Medicine ball slam the heavier the better
Plyo pushups
Jumps/jumping/jumping lunges
Wrist curls reverse wrist curls for strength
Knuckle pushups
finger tip pushups
Pushups wearing gloves,
pushups wearing gloves focusing specifically on the thumb
Anything for the thumb
'joe lewis wrist tip'
'george foreman heavy bag'
by strengthening the hip and the foot, something something kinetic chains