[hardboiled]

Actually it's a really good regimen. Not so sure about the curls. Depends on where you want to target I suppose. But to gain muscle you're going to have to lift heavy and to muscle failure with lots of rest, specifically squats and deadlifts. These exercises target the largest muscles and induce the most growth hormone production.

I've tried the 5x5 strong approach to lifts but haven't gained too much weight or muscle. But did get a lot stronger.

Personally, I've never been to into growing muscle. More into developing power and strength. For that I picked up power lifting and kettlebell training.

If pushups get too easy try doing one-arm pushups. One-legged squats (aka pistols) are also good. Best