During the Tour de France, riders consume an average of 6000-7000 calories a day, more on particularly long or hard days. Some of these calories are eaten during sit-down meals: breakfast, a pre-race meal, and dinner. The rest are consumed on the bike during the stage or through snacking in between meals. No matter the time of day, it is rare to see a Tour de France rider without either food or drink in his hand.
It is hard work consuming upwards of 6000 calories a day, so cyclists try to eat foods that are rich in calories and nutrients. During breakfast and dinner, they get their carbohydrates from potatoes, rice, pasta, cereal, whole grain breads, and fruits and vegetables. Protein sources include eggs, meat, chicken, and yogurt. Their fat intake is usually the result of the way their meals are prepared. Willy, the US Postal team's chef, uses monounsaturated oils when he cooks, such as olive oil, and the team consumes some butter and cheese with meals as well.
On the bike, riders eat a mixture of real food, energy bars, and gels. The soigneurs prepare musette bags with small sandwiches, often ham or turkey and cheese with butter on a roll, and the bags almost always contain baked potatoes. The riders eat the potatoes like you would normally eat an apple. Lance also consumes about 2-3 Powerbars' during each stage as well.
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