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Likewise cooling down after strenuous activity is vital because lactic acid collected will make the muscles sore and painful and movement will be affected． A good recovery run and stretching after the activity will get rid of the waste products and regeneration activity and massage will further help． We should also realize that after an injury it is important to regain muscle strength lost during the inactive period．If the rebuilding process is not adequate，the risk of these players becoming injured again is high．
由于乳酸堆积可使得肌肉产生酸痛感并影响技术动作的完成，因此剧烈运动后的放松活动非常关键。剧烈运动后的恢复性跑和伸展活动可以移除废物，康复性活动和按摩会更有益。我们还应该注意到，受伤后恢复在不训练期丧失的肌肉力量也很重要。如果此恢复期不充分，则运动员再次受伤的几率会很高。
