Mira-Core stretches and strengthens most of the 320 muscle pairs that are involved in the mechanics of swinging and throwing. Mira-Core instantly ingrains a massive amount of muscle memory through the Stress/Stretch engagement of the legs, hips, core and upper torso. If swinging a golf club, bat or racquet, or throwing a baseball, softball or football, the results are amazing. You will experience more power, velocity, explosiveness and consistency.