why are climbers so lean?

Climbers often have a lean physique due to the physical demands of the sport and the training involved. Here are a few reasons why climbers tend to be lean:

1. Body Weight-to-Strength Ratio: Climbing requires a high strength-to-weight ratio, meaning that having less body weight to carry while maintaining strength is advantageous. A leaner body composition can contribute to improved performance, especially when it comes to pulling and holding oneself up on the rock or wall.
2. Endurance Training: Climbing involves prolonged periods of sustained effort and muscular endurance. Endurance training tends to favor a leaner physique as excess body weight can hinder performance over extended periods.
3. Upper Body Strength: Climbing places significant demands on the upper body, including the arms, back, and core muscles. Maintaining a lean body composition can enhance relative strength and power in these muscle groups, allowing climbers to move more efficiently on the wall or rock face.
4. Weight-to-Surface Area Ratio: Climbers often find themselves needing to push against the rock or wall, utilizing friction and body positioning to maintain balance and stability. A leaner body with less surface area can facilitate better contact and adherence to the climbing surface.
5. Energy Efficiency: Carrying excess body weight requires more energy expenditure during climbs. By maintaining a lean body composition, climbers can optimize their energy efficiency and endurance, enabling them to sustain longer and more challenging climbing sessions.

It's important to note that individual body types and genetics can also play a role in a climber's physique. While being lean can be advantageous in climbing, there is no single body type that guarantees success. Climbers come in various shapes and sizes, and the most important factor is developing the strength, technique, and mental fortitude necessary to excel in the sport.