American researchers have shown that pre-treatment with ascorbic acid will significantly reduce the pain and stiffness of strenuous exercise. They found that delayed-onset muscle soreness was almost halved in athletes who took three grams of ascorbic acid daily (one gram taken three times a day) beginning three days before exercise and continued for seven days afterwards, compared to those who took a placebo. It is not clear why vitamin C should have this therapeutic effect but it is known to quench free radicals that accumulate in muscle during heavy exercise. These free radicals prevent muscle repair and contribute to pain so their rapid removal helps muscle recovery faster. PAIN, September, 317-321,1992.