10 ways to a six-pack Your abs are in there somewhere and surprisingly easy to coax out. Follow these rules for a hardcore hard core

1 Scrub up

As well as a dazzling Tom Cruise smile, brushing your teeth the right way will give you an A-list midriff. "Standing on one leg when you're brushing works deep core muscles," says Dr Tim Hutchful, of the British Chiropractic Association. "It's a perfect short workout, creating a degree of instability that works smaller muscles essential for core strength." Just don't try the same thing at the urinals.

2 Get in-tense abs

Intensify your workout to pound the paunch. A study by Laval University, Canada showed men who endured 15 weeks of interval training lost nine times more subcutaneous fat than men who did 20 weeks of steady-state endurance training. Insert a high-intensity interval session into your routine 3 times a week. Do 1 min at a rate of 9/10; 3 mins at 4/10 and repeat for 20 mins. That's only 5 mins at full speed.

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