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:
7 am: breakfast
• large bowl of cereal, such as porridge, muesli or Weetabix
• half pint semi-skimmed milk plus chopped banana
• 1-2 thick slices wholegrain bread with olive oil or sunflower spread and honey or jam
• glass of fruit juice
• 1 liter fruit squash (concentrated fruit mixes)