I've been doing them on a regular basis the last several years. They're a real shoulder saver. I'll superset pushups w/crossovers, then superset pushups w/a pressing movement. My shoulders haven't felt this good since my 20's and i have commendable chest development. If you're in this for longevity, reduce the heaving pressing and add some crossover/fly work. You're elbows and shoulders will thank you.