Complex carbs and lean proteins make up the bulk of many athlete's diets.

(Relaxnews) - Gearing up for the Olympics, athletes are powering down anywhere from 6,000 to 10,000 calories a day. But what does that look like exactly? Britain's National Health Service (NHS) spells it out, with the added note to not try this diet at home.

While American swimmer Michael Phelps said he gulps down some 12,000 calories a day of fried egg sandwiches and pizza during training, the typical athlete follows a stricter regime of complex carbohydrates and plenty of lean proteins.

If you're a male Olympic heavyweight rower, this is what your diet might look like, if you're training three times a day, according to the NHS. Click next.