Kettlebell

Shape

This cannonball-shaped cast iron weight works your core like crazy – sculpting, strengthening and trimming in ways no other tool can match. ...

This cannonball-shaped cast iron weight works your core like crazy – sculpting, strengthening and trimming in ways no other tool can match.

Forget just cruising. You’ll torch more calories, tone up all over and make the minutes fly with this quick treadmill-meetskettlebell circuit.