Pre-training stacks and nitric oxide boosters help to get the so-called muscle pump. Every strength sports fan knows that the pump's effects can be easily seen in the mirror: the circumferences of the trained muscles become visibly enlarged. This is a temporary effect, but the phenomenon itself has primarily a training aspect - there is a widening of blood vessels through which more blood flows, which allows for more effective transport of oxygen and nutrients to the muscle cells. When is it best to use these types of products?
Regardless of whether you are just about to start your physical training regimen, or have already been training for a long time, and happen to be an active athlete - protein and creatine should be your allies of choice.