Dr. Stacy Sims on Zone 2 Confusion, HIIT vs Sprint Training & The Truth About Wearables

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 Take the BioSyncing Quiz to help you understand what’s actually happening in your body — and how to fix it. 👉 https://biosyncing.scoreapp.com/ A BIG thank you to our sponsor who makes the show possible: • MitoQ - Support your cells at the source with MitoQ NAD+ Dual Action, designed to boost NAD levels and help your cells actually use them for steady energy and sharper focus 👉 https://www.mitoq.com and use code ANGELA for 10% off your first order.