The Diary Of A CEO with Steven Bartlett

No.1 Sleep Expert: Magnesium Isn’t Helping You Sleep! This Sleep Habit Increases Heart Disease 57%

1246 snips
Nov 17, 2025
Join Dr. Matthew Walker, a Professor of Neuroscience and Psychology, as he dives into the science of sleep. Discover how inconsistent sleep timing can lead to serious health risks, including increased heart disease. He reveals why magnesium and melatonin might be hindering your rest and introduces effective sleep hacks for immediate improvement, such as digital detoxing and light reduction. Learn about the crucial role of REM sleep and why altering your sleep habits could enhance cognitive performance and overall health.
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Sleep Regularity Beats Total Hours

  • Irregular sleep timing strongly predicts mortality and cardiometabolic risk.
  • Going to bed and waking within ~30 minutes daily cut all-cause death risk by ~49% and cardiometabolic risk by ~57%.
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Weekend Catch-Up Sleep Helps The Heart

  • Catch-up weekend sleep reduces cardiovascular risk versus continuous short sleep.
  • Weekend long sleep lowered heart disease risk by ~20% compared to people who stayed short-slept all week and weekend.
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Bank Sleep Before Expected Deprivation

  • Bank extra sleep before known sleep-loss events by extending time-in-bed in preceding days.
  • Sleep banking reduced cognitive impairment under deprivation by about 40% in controlled studies.
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