In midlife, we no longer have arms, we have wingspans!  Those batwings will take flight if your gym offers a new class called Krankcycle, motivating you to do more, and more and MORE just like a spinning class.  No such class? Duplicate on the arm cycle at your gym with great tunes on your ipod and crank away at those triceps, biceps, shoulders, and back while you give your legs a break.  Find great mixes on www.dynamixmusic.com