Tour de France cyclists lose muscle mass due to extreme exertion

The Tour de France is one of the most physically demanding challenges for professional cyclists. It appears that the extreme exertion takes its toll. According to Bicycling Nederland, the riders' bodies lose muscle mass during the race. The body breaks down muscles as an energy source, a process also known as catabolism.

The muscle breakdown is a result of prolonged, intense physical exertion. The body depletes its glycogen reserves and, as it were, 'eats' its own muscles. This is a well-known phenomenon in endurance sports, but during the Tour de France, the problem is exacerbated by the daily extreme strain.

Riders follow a strict diet to limit muscle loss. However, it is impossible to completely prevent the breakdown. After the Tour, the riders' bodies will need time to recover and rebuild the lost muscle mass.

This report is a summary based on the mentioned source and is not medical advice. Always consult a doctor or pharmacist in case of complaints.