Do you find yourself slouching throughout the day? While you may be aware that it looks bad, you may not be aware that all that slouching could be reversing all your hard work at the gym. Here's why from Men's Health:
Slouching sabotages your six-pack. Training your core helps correct poor posture. But an hour a week of core work can't compensate for the 50 hours spent slumped over your keyboard. The fix: Stay tall through your hips and keep your head up and shoulder blades back and down all day long.
So do as your mother told you and sit-up straight, your six-pack (or your dreams of a one) will thank you later.