Category: Elite athletes

According to a study in the *Journal of Applied Physiology*, elite triathlete Kristian Blummenfelt has daily energy expenditures that can exceed 8,500 calories during intense training. The demanding nature of his training dictates what diet does Kristian Blummenfelt follow, which is a strategically flexible, high-carb fueling plan rather than a restrictive regimen.

While training for a marathon, Eliud Kipchoge, the world's greatest marathoner, consumes a daily calorie intake that varies significantly based on his training intensity, ranging from approximately 2,300 calories on easy days to over 3,000 on high-volume training days. This modest but strategic approach contrasts sharply with the popular assumption that elite athletes require enormous daily calorie counts.

Following a life-changing Coeliac disease diagnosis, Ironman World Champion Lucy Charles-Barclay completely transformed her nutritional strategy, which included specific supplement choices. Discover exactly what supplements does Lucy Charles Barclay take to support her rigorous training and elite-level performance.

During his peak training for the 2008 Olympics, swimmer Michael Phelps reportedly consumed up to 10,000 calories a day to fuel his rigorous schedule of six hours of training. This extraordinary intake is common among ultra-endurance athletes who push their bodies to the absolute limit.