When you perform overhead presses, you work your anterior deltoids (front shoulder muscles), triceps, trapezius (upper back), and pecs. You'll hit your rotator cuff muscles (the smaller muscles ...

Achieving well-defined shoulders requires a combination of targeted exercises that focus on different parts of the shoulder ...

When it comes to building bigger shoulders and mastering explosive power in these muscles, the overhead press is a timeless ... and arm has to do its own work without assistance from the other.