Want a flat stomach? Diagonal crunches are a killer workout for abs. Nikki Fogden-Moore shares her top tips.

Diagonal cruches for strong abs - Women's Health & Fitness

How to

Start in a classic crunch position with your lower back firmly on the floor and your head well supported in your hands. Elbows back. Chin off your chest. Crunch and twist. At the same time, bring your opposite knee up towards the elbow.

Squeeze your obliques and focus on your abs as you crunch in. Lower back to the start. Repeat on the other side. 15 to 20 reps.

Controlling your speed is paramount.

Tip

Keep your head heavy in your hands so you are not straining your neck.

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