1. Ice bath tightens the blood vessels, reduce inflammation and flush waste products out of the body. This also helps to drain lactic acid from your fatigue muscles. 2 Stretching out: Stretching out after a hard exercise can reduce muscle stiffness as well as help your muscles to recover faster after a gym session. Stretching is also very useful to improve flexibility and range of motion. 3. Research has proven that having a massage after intense workouts can speed up your recovery time twice as fast than regular rest, this is due to the increased blood flow and nutrients & released tension.