Achieve Ultimate Flexibility in 20 minutes a day! Based on his bestselling book Ultimate Flexibility, Sang H. Kim has created a series of 20-minute stretching workouts that you can follow at home to increase your flexibility and tone your body. Each of the three workouts – easy, moderate and intense – gives you a total body stretch with a special focus on the muscles commonly used in martial arts training. You also get an introduction to stretching, tips on getting the most out (more…)