Fitness Friday!
Warm-up exercises are essential to any workout. Preparing the muscles and joints for more intense activity helps prevent injury, as well as promoting circulation. Warm-up exercises increase the temperature of the body, making the muscles more flexible and receptive to strenuous activity. Most experts even advise that you engage in warm-up exercises before stretching. Warming up should slightly increase the heart rate but not to the level experienced during your workout.
From: www.health.discovery.com
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