Targets: Abs, arms, back
How to: It’s time to get low. Lie down on your back with legs straight out. Extend the right arm straight up, kettlebell in hand. Next, bend the left knee and begin to rise, with the left arm keeping the body propped up. Feel the abs burn? You’re doing things right! Sit all the way up, then carefully return to starting position. Knock out 8 to 10 reps per side if you’re up for the challenge.