If you want to rediscover your stomach muscles before the warm weather makes an appearance (be summer already) and are hard as nails - the 30 day plank challenge is for you.
Like the squat challenge before, the mission is simple - 30 days of stomach tightening planks, increasing the length of time you weep with pain with each day.
30 Day Fitness Challenges have laid down the rules in their easy to follow plan.
Ready, set, plank:
And then when you've mastered that, Millie Mackintosh is here to show you how to push it even further with the 'plank of death'.
Sounds a hoot Mills.
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