You can perform this exclusive workout on its own or as part of the Tone It Up Bikini Series 8-Week Challenge (start any time!) from Instagram fitness stars Katrina Scott and Karena Dawn.(Fair warning: You might see your body change like crazy!) All you’ll need is a kettlebell and a pair of dumbbells.
1. SINGLE-LEGGED BRIDGE
How to do it: Lie on your back with your arms along your sides and palms pressing into the ground. Bend your left knee and place the sole of your left foot on the ground.Extend your right leg and point your toes toward the sky. Keeping your hips square to the ground, press into your standing heel as you lift your butt straight up into a bridge. Lower down with control, keeping the leg elevated the entire time. Complete 15 reps, then switch legs, holding a dumbbell at your hip (pictured) for an extra challenge.