This will help recruit more muscle fibers in your butt and make the exercise more effective. (ashotofadrenaline.net)
In order to reach the end of each set, your body will start recruiting more muscle fibers. (fitnessandpower.com)
In the first one to two months of strength training the neural connection — that is, your brain recruiting more muscle fibers — is responsible for all of your progress. (flippingfifty.com)