Most exercise scientists would agree that the physiological determinants of peak endurance performance include the capacity to transport oxygen to the working muscle, diffusion from the muscle to the ...

McKenzie has clients do interval training, which involves alternating periods of high-intensity exercise and rests, to improve their VO2 max and overall stamina. Read next ...

Friends McKenzie Joel and Milly McComb wouldn’t have described themselves as runners…until they completed a fantastic 28-day ...