Step up with single arm thrust exercise is a combination workout. It targets most of the major muscle groups all over the body. The particular moves of the workout increase your focus, balance, coordination and strength. Step up exercise itself is a compound exercise that works on lower body muscles, core abs and legs specifically. Combining step ups with single arm thrust allow you to engage your upper body muscles in the workout and get maximum benefits in minimal time. Single arm thrust targets shoulder, arms and chest muscles simultaneously.