In this 40-minute Treadmill Run, I dive into the science and strategy behind speed work, including the benefits of incorporating hills into your cardio routine. Taking this run outside? Try to pick a route ideally with long hills.

Join me as I break down common myths about HIIT, explain what HIIT actually is (and isn't), and discuss the importance of understanding cardio vs. resistance training. We’ll explore:

• The benefits of speed work versus continuous steady-state aerobic work
• When and how to use inclines effectively, including on a treadmill
• How to gauge when to push it and when to ease back
• Should we use heart rate zones when weightlifting?
• A deep dive into the cellular physiology behind these workouts and the differences between cardio and resistance circuits

And remember, this wo ...