The only thing I would be concerned about is your joints, particularly your wrist. But I don’t know enough about the subject of weighted push-ups to know whether that is a valid concern. Save to say, that is the one thing that pops to mind.
For instance, I can do ~100 pushups unweighted, but afterward I feel like I just put a very excessive and probably dangerous stress on my wrists. So I use push-up bars(fancy way of saying, my dumbbells) or I do them on my knuckles. I can’t do quite as many this way, but it feels a lot more natural of a movement?
I’ve tried doing weighted push-ups in the past, but I could never figure out a good way to do them really. I don’t have a weight vest or anything like that, so I just tried putting a bunch of 10s in a backpack, strapping the pack on really tight and going at it. It worked for a few reps, but then the weight started to slip around and it again felt like injury territory.
I couldn’t fit 45s in the backpack, and I didn’t have any 25s at this time… or a hot girl laying around… oops.