To better understand how exercise intensity dictates fuel use, and what this means in respect to the fat burning zone, we need to review the energy systems your body can rely on during exercise.

The off-season is your time to improve your strengths, fix your weaknesses, and come back better next year. Here are the most important things to consider when planning your training.

I adjusted my powerlifting and kettlebell training to adapt to the needs of this highly-intensive challenge.

Their running technique wasn’t based on maximum oxygen uptake, the African pygmies focused solely on efficiency.