You’ll needA stability ball and a pair of 3- to 5-pound dumbbells.

Stop and move to another exercise in any order.

Repeat the plan three times a week, increasing the number of reps as you get stronger.

This image may contain Female Human Person Woman Sport Sports Fitness Exercise and Working Out

Add 60 minutes of fat-melting cardio most days to reach navel nirvana in no time.

Walk feet forward, leaning back so ball rolls under shoulders and head.

Squeeze glutes, and lift hips toward ceiling; extend arms up, palms facing in, to start.

This image may contain Female Human Person Woman Sport Sports Fitness Exercise and Working Out

Repeat, switching directions for 1 rep. Continue, moving as quickly as you’re able to.

Keeping knees together, rotate hips, rolling ball to left.

Engage abs and bend forward, extending arms at shoulder level, palms down, to start.

This image may contain Human Person Female Exercise Sport Sports Working Out Fitness Woman Blonde Teen and Girl

Reach behind you, flipping palms up (as shown).

Pulse arms up three times.

Place calves on ball and lift hips, forming a straight line from shoulders to knees.

Image may contain Human Person Female Exercise Sport Sports Fitness Working Out and Woman

Drive left heel into ball and extend right leg toward ceiling, toes pointed.

Reach left leg out to side in line with torso to start.

Lift torso off ball (as shown).

Image may contain Human Person Female Woman Sport Sports Exercise Working Out and Fitness

Do reps. Switch sides; repeat.

Hold a weight in both hands at chin level, elbows bent.

Straighten legs and reach overhead, rolling back onto ball until entire body is outstretched (as shown).

Image may contain Human Person Fitness Sport Sports Exercise Working Out Female and Yoga

Return to start for 1 rep. Do reps.

This image may contain Human Person Female Fitness Exercise Sport Sports Working Out and Woman

Image may contain Human Person Exercise Sport Sports Working Out and Fitness