@natesmithtkd: BEGINNER FLEXIBILITY STRENGTHING ROUTINE (Contract-Relax) 💥PNF Stretching is important for improving the strength of your muscles while you're holding a specific stretched position. It will improve your strength in maintaining that range of motion. . #stretch #flexibility #Fitness #taekwondo #muaythai #karate #martialarts #viral #trending #mma #artesmarciais #artesmarciales #foryou #fyp #martialartist #fyp #foryou