Mel B’s 10-minute workout

This 10-minute plan will help you hone a flat tum of your own - aim for 10 reps of each move in the circuit, then repeat. You can either do it at the end of your normal workout, or on its own on the days in between. But to see the best results, supplement it with at least three 45-minute cardio sessions a week - there's no point blasting your tummy muscles unless you burn off the fat on top.

Ab Blaster

1 - The Ab Blaster

A twist on the classic crunch, this 'bridge and crunch' targets the upper portion of your abs.

• Lie on your back, with your knees bent and feet resting flat on a step.

• Support your neck by placing your hands at either side of your head, just behind your ears, with your elbows out to the sides.

• Inhale and simultaneously raise your hips off the floor, concentrate on contracting your tummy muscles as you lift up and exhaling at the top.

• Lower back to the start position.

Total Tummy Toner

2 - The Total Tummy Toner

Lowering your legs alternately targets all the muscles in your stomach and core - the ultimate move for a flat tummy.

• Lie on your back holding a medicine ball above your head.

• With your legs straight and raised to around 45°, start to lower each leg alternately until it's just above the floor and you can feel a pull in your stomach.

• Keep alternating your legs.

• Remember to keep your back straight throughout and don't arch over - the weighted ball should help to stabilise you.

Bulge Beater

3 - The Bulge Beater

This extended plank strengthens your core, blasting your stomach.

• Start in the traditional plank position on the floor, with your elbows directly beneath your shoulders, forearms resting on the floor, feet together.

• Rock forwards slightly on your feet as you begin to 'walk' your forearms forwards, moving twice with each arm.

• Walk your arms back to the start position. This is one rep.

Waist Whittler

4 - The Waist Whittler

Who needs a corset? This medicine-ball twist targets your obliques, the muscles that run down either side of your waist, to strengthen and cinch you in.

• Sit on the floor, with your knees together, and heels off the floor, holding a medicine ball in front of you with both hands.

• Move the ball from side to side, twisting your torso as you do so.

• Take care not to strain your neck as you twist.

Core Strengthener

5 - The Core Strengthener

The side plank is brilliant for tightening your core muscles, and accentuates a flat stomach by improving your posture.

• Lie on your right side, resting your forearm on the floor at a 90° angle from your body, with your elbow directly beneath your shoulder, feet together.

• Lift your torso and hips off the floor, so your body's in a straight line, and your weight's resting on your arm.

• Aim to hold for 30 seconds without letting your hips drop, then repeat on your left arm.