Optimise Your Body's Energy Systems

You’ve got two, and training them the right way makes everything – from powering up stairs to your regular workouts – easier and more efficient.

- Mary Anderson

What we call cardio is actually more nuanced than what that word implies. Our bodies have aerobic and anaerobic (without oxygen) energy systems, and we use both during exercise. Why split hairs? Because if both aren’t trained, you can be hard-core gym-committed and still get breathless walking up stairs. Here’s the drill for firing on all cylinders.

STOKE YOUR ANAEROBIC SYSTEM