No. You don't need carbs to rock climb. You also don't need fat to rock climb. If you aren't eating enough fat, your body will manufacture palmitate out of excess triglycerides from the protein and carbohydrate you're overconsuming. Similarly, if you're not eating enough carbohydrate, your body will manufacture glucose by breaking down lean tissue or converting the excess protein in your diet into glucose (while you store the excess fat, if any is in excess).
Both of those metabolic pathways are fairly inefficient, so if you want to perform optimally you're best off consuming a healthy mix of both fat and carbohydrate so you don't force your body to convert excess macronutrients into deficient macronutrients. Try eating equal calories from healthy, Primal sources of fat and carbohydrate with moderate to higher protein intakes and adjust accordingly until you feel you're performing best. I like starting at 33% fat, 33% carbohydrate and 33% protein and adjust accordingly. I find 33% protein is about that magic number, so skew your fat and carbohydrate while holding that protein. I eat about 30% calories from protein at all times, and around 30% fat and 40% carbohydrate. That seems to give me maximum performance, and I have a very sedentary job and lift heavy weights 3 days a week with minimal cardio.
Last edited by ChocoTaco369; 01-24-2013 at 08:40 AM.
Don't put your trust in anyone on this forum, including me. You are the key to your own success.