For instance, reward yourself with a massage, it can improve blood flow and help your recovery.Muscle NitXT Work opposing muscles at the same time by performing exercises that work the chest and back or quads and hamstrings. This procedure allows the muscle to rest while the opposing one is working. You will be able to decrease the amount of time you spend in a gym because you are increasing the intensity of your workout.Muscle NitXT Do as many sets and repetitions as you can during your training.