Lhakpa Gelu Sherpa has the record of fastest ascent to the M…

Lhakpa Gelu Sherpa has the record of fastest ascent to the Mount Everest. During his ascent, he needs so much energy that aerobic respiration alone cannot fulfill the demand for ATP. His muscle cells then start to respire anaerobically. Which byproduct will build up in his muscle cells during his ascent?