<p>Sling Training is the ultimate guide to bodyweight suspension training. This is functional fitness at its best: Agility, strength, and balance. Every exercise connects to your core muscles.<br><br>100 exercises range from easy to extreme. Individual chapters take you from targeting simple muscles to full-body movements. <br><br>"It makes you less Arnold, more Bruce Lee," says pro snowboarder Fredrik Austbo. <br><br>Sling Training features 15 s...