Flat Belly 101

You don’t need an advanced degree to understand this: Planks work wonders.
Lose the crunches. Forgo complex machinery. Just place your forearms down, extend your legs, tuck your toes, and hold.
Here’s why plank is the flat belly gold standard:
•    Ab muscles work twice as hard
     than in traditional crunches
•    Planks strengthen shoulders, back,
      and glutes
•    Posture improves, which flattens out
      your belly even more
A bikini bod isn’t the only plank payout. Planks make your joint hugging muscles strong, preventing injury in vulnerable areas like hips, knees, and shoulders.
Maybe the mirror sends you there, but rest assured: A consistent plank practice of two to three times a week will make beautiful things happen inside…and out.