By promoting capillary function and collagen production, exercise can actually decrease and slow the signs of premature aging. Also, sweating from exercise or strenuous activity helps your skin to eliminate waste through perspiration. One of your body’s natural processes for waste removal is contained in the lymphatic system, and because sweat is produced from lymph fluid, toxins are released when you perspire. Vital to achieving successful workouts is to keep well hydrated before, during and after your exercise. The length and intensity of your workouts, heat, humidity, and the volume of perspiration are all major factors to consider when trying to maintain your body in a state of proper fluid balance and avoiding the potentially serious problems associated with dehydration.