Jumping Rope Is A Great Way To Tighten Muscles Getting fit can be a big life change, especially if you have never done it before. Even if you are used to a fitness routine, sometimes it can get somewhat boring and you need a change. _Website not available. Sign in: https://www.twine.net/signup_…Jumping Rope Is A Great Way To Tighten Muscles Getting fit can be a big life change, especially if you have never done it before. Even if you are used to a fitness routine, sometimes it can get somewhat boring and you need a change. _Website not available. Sign in: https://www.twine.net/signup_WWWW…