#1 Proper form
The primary significant thing to improve push-ups is to ensure that you’re performing them accurately, with appropriate structure.
I realize this might seem like good judgment. In any case, you might have a hard time believing the number of individuals that I’ve worked with that think they know, yet don’t, how to perform push-ups appropriately.
Perhaps the most well-known botch that I’ve seen isn’t supporting the center. That makes your spine round either up or down, as opposed to remaining in an unbiased position.