16:31

Ben Greenfield outlines signs you're overtrained: resting heart rate jumps over 5%, you can't hit your usual peak heart rates, or your heart-rate variability drops below 90. He covers recovery tools like compression boots and electrostimulation, plus biomarkers and apps that track whether your body is actually recovering.

Questions this video answers

A consistent fluctuation greater than about 5% above normal resting heart rate.

A sudden loss of about 2% body weight.

hs-CRP (C-reactive protein) should not remain elevated for more than ~48 hours after a tough workout; consistently elevated hs-CRP at rest is a red flag.

Above 96% oxygen saturation on a fingertip pulse oximeter.

Consistently low HRV — he cites values "below 90" on his tracking scale — or HRV that bounces around day-to-day.

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