Want sculpted abs? Jen Jewell demonstrates some of her favourite exercises.

Plank punches for gorgeous abs - Women's Health & Fitness

How to

1. Begin in high plank position. Your shoulders, arms and wrists should be in line with one another and make sure your back is flat. Focus on engaging your core and glutes.

2. Raise your left arm and punch forward, extending your arm straight out as you punch. Motion is slow and controlled; core is to remain engaged throughout the entire exercise, as this will also assist in maintaining your balance (it will minimise tipping as you extend your arms for each punch).

3. Lower your left arm to the starting position, arms and wrists in line with one another again. Raise your right arm and punch forward as you did with your left.

4. Repeat, alternating between right- and left-arm punches. Make sure core is tight throughout the entire exercise. Alternate arms for 30 to 60 seconds. Rest and repeat for two more sets.

BONUS: Upper body blast for chest, shoulders and arms!

SETS/REPS: 3 x 30 to 60 seconds

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Photo credit: Jamie Watling Photography