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2006/12/30, 11:23 PM
From www.bodybuilding.com
"Active "Rest" - Don't let the word rest fool you here, this actually refers to using light activity to hasten recovery, most notably your cool-down period. By taking 10-20 minutes after working out to do some light aerobic activity and stretch you help to boost your recovery immediately. Consider this - 10 minutes of light jogging (no more than 60% of estimated max heart rate) will help remove around 60% of the lactic acid built up in your muscles, another 10 minutes will clear out an additional 25%.
If you don't cool-down, it can take up to 4 hours to completely clear the lactic acid and other metabolic wastes from the muscle tissue. Stretching helps as well to "wring" the metabolic wastes from the muscle tissue in addition to helping to restore the muscles to their normal length."
Besides your warm-up, active rest also refers to light workouts between heavy ones and periods of less structured training in a periodized program. Light activity will speed recovery faster than complete rest alone.
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