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On rest and recovery days it is important to avoid doing the worst thing you can do for your body... nothing. Examples of rest and recovery activities are walking, static stretch exercises (after a warm up and loosening up period), dynamic stretching, swimming, water running, and riding a bike.
This helps with tissue repair and speeds your recovery. To speed recovery after a strenuous workout, tune into the needs of your body. Adequate rest, proper cooling down and stretching, and adequate water and nutrient intake are all essential ways to help your body recover in time for your next workout.