Quote · The Diary Of A CEO with Steven Bartlett
Most Replayed Moment: This Is The Best Exercise Protocol For Women!
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Exercise Rules Change in Perimenopause: Polarized Training Explained
At 16:15 · chapter starts 12:40
Thirty seconds of all-out sprint effort followed by full recovery doesn't just burn calories — it triggers epigenetic changes that open GLUT4 protein channels to reduce insulin resistance, and releases myokines that tell the liver to stop storing visceral fat. That's more metabolic work than an hour at moderate pace.
High-intensity sprint intervals cause epigenetic changes that open GLUT4 protein channels, allowing glucose into muscle cells and reducing insulin resistance.
High-intensity exercise releases myokines from stressed muscles that signal the liver to stop storing visceral fat and instead release fatty acids as fuel for the mitochondria.
Staying in the moderate-intensity exercise zone (zones 3–4) elevates cortisol and inflammation without triggering the adaptive signaling needed for body composition improvements.
Moderate-intensity exercise (heart rate zones 3–4) is the most counterproductive zone for most women. It raises cortisol and inflammation without generating the adaptive cascade that improves body composition — giving you all the stress of hard training with none of the hormonal benefits.
