This week, Mikki breaks down a major 2025 study using UK Biobank wearable data to challenge one of the most widely accepted rules in exercise science. For decades, we’ve been told that one minute of vigorous activity equals two minutes of moderate activity. But the data tells a very different story. Drawing from over 73,000 participants, this episode unpacks how vigorous movement may be four to ten times more effective depending on the health outcome. Mikki explains what actually counts as “vigorous” (it’s more accessible than you think), the physiological mechanisms driving these benefits, and how small bursts of effort throughout your day can meaningfully impact long-term health. This is a practical, evidence-based rethink of how to approach movement for metabolic health, cardiovascular fitness, and longevity.

Key Highlights:

•  Why the long-standing 1:2 activity ratio doesn’t hold up 
•  What “vigorous” really means in real-world terms 
•  How short bursts of effort impact cardiovascular and metabolic health 
•  The surprising limits of light activity for disease risk reduction 
•  Practical ways to incorporate high-value movement into daily life

Contact Mikki:
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