umps are like push-ups for your penis. As you create a vacuum and blood is forced into the penis, the muscle tissue expands to the maximum, breaks down, and then rebuilds into larger and stronger muscles. This is how you exercise the penis muscles to get a bigger penis. Just like bodybuilding, patience and proper technique are required before you see permanent results. Penis pumps will give you an erection every time you use it by drawing blood into the penis through suction. Penile pumps are designed to force blood into the penis and to give you an erection, so if you have erectile difficulty, this will be an effective method to get an erection.