Bryan Johnson· Author
Elevated nocturnal heart rate and and decrease heart rate variability were observed after high strain evening stress or evening exercise
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The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
Elevated nocturnal heart rate and and decrease heart rate variability were observed after high strain evening stress or evening exercise
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The findings show that late night exercise causes the following. Delayed sleep onset, shorter sleep duration, lower sleep quality, higher resting heart rate, and decreased HRV.