Dr. Stacy Sims on Zone 2 Confusion, HIIT vs Sprint Training & The Truth About Wearables
High Performance HealthShow Notes
Most of us have heard that we need to exercise more, but today, exercise physiologist Dr Stacy Sims digs into what kind of training actually moves the needle for women — and why longer, slower workouts may be leaving results on the table.
We get into the real difference between high-intensity interval training and sprint interval training, why the Norwegian 4x4 is one of the most efficient tools for building VO2 max, how to structure a full week of training across just three days, and why your wearable's heart rate zones are probably misleading you more than helping you.
WHAT YOU'LL LEARN
Why high-intensity and sprint interval training are not the same thing — and why the distinction matters
What the Norwegian 4x4 actually is and why it's so effective for VO2 max
How to combine strength, sprint, and cardio work into just three sessions a week
Why resistance training and high-intensity work should be prioritised over Zone 2 if you're short on time
The truth about BDNF, brain health, and why you need both a seed and the miracle grow
Why wrist-worn heart rate monitors consistently fail during high-intensity efforts
What Zone 2 actually is — and why most people are training too hard to be in it
Why 10,000 steps is a marketing figure, not a science target
Why "Zone Zero" has no basis in exercise physiology
VALUABLE RESOURCES
Watch the full podcast here: https://youtu.be/2SWU8_KDFmc
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