Key rebounding technique on piano

Lately i have been trying to practice several pieces that have plenty of octaves and chords.I have been following the advice of always having a good structure in the hand. Lately i wanted to integrate some key rebounding technique.Forgive me if i dont explain this well.What happens is that i let the piano keys raise my fingers aftair each stroke(i leave fingers on the keys and i can really feel the weight of the mechanism and key!). I find that this helps me a lot to have the hand near the keys and it allows me to have minimum tension.However if i really want my fingers to be raised by the piano keys and not by my own muscular effort then i have to let my hand structure collapse just a little and the hand to be a little like it is limp.If i let it in the way it is when i stand on the keys then i feel like my "skeleton" fingers are too heavy to be lifted by the mechanism of the key and while i do not feel any tension and i am feeling ok, my fingers keep the keys being pressed down (the power of a properly setup palm with correct structure seems to be very high) Actually it helps me a lot if i am thinking i am leaving the key but then suddenly i decide not to and stay on keys. Am i doing something wrong?Is this technique correctly or is it something that i should abandon? Forgive me i am saying something that is very wrong. Best regards UPDATE:actually i wonder wether it is ok to say that "fingers are lifted by the key".actually i let my fingers remain on the key,but the key is lifted without me using muscular effort but rather as if the fingers are passive and boneless and like they can no longer hold the key and the key is coming up rebounding with the fingers still staying on key. Update 2:I think i found what i was doing wrong,i was playing with a rather low wrist position with flat fingers and it was easy for my structure to collapse if i didnt pay attention.After i returned to a more natural hand position with fingers having the normal curl,and without allowing my knuckles to collapse then i managed to have better results.