Improve Energy & Longevity by Optimizing Mitochondria | Dr. Martin Picard

Practicing meditation for 40 to 60 minutes per day can reduce total nightly sleep requirement from 8 hours to 6 hours.

"And it is true there are data showing that people who meditate for an hour or so per day, or two 20-minute sessions seems to be the most typically used protocol, can fairly dramatically reduce their sleep need and really, you know, go from like an 8-hour need to a 6-hour need with a 40-minute investment of meditation." (said at 2:00:23)

The claim that a 40-minute daily investment of meditation reliably reduces physiological sleep need from 8 hours to 6 hours is overstated. The primary study behind this claim (Kaul et al., 2010) examined only 7 long-term experienced meditators who engaged in multiple hours of daily practice, finding they had lower total sleep duration without vigilance decrements compared to controls. The authors explicitly concluded that whether meditation can causally replace sleep or pay off sleep debt remains under investigation. There are no randomized controlled trials demonstrating that 40 to 60 minutes of daily meditation reduces biological sleep requirements by 2 hours.

• partial: Meditation acutely improves psychomotor vigilance, and may decrease sleep need. (Behavioral and brain functions : BBF 2010) · cited 63x in the literature

  "In long term meditators, multiple hours spent in meditation are associated with a significant decrease in total sleep time when compared with age and sex matched controls who did not meditate. Whether meditation can actually replace a portion of sleep or pay-off sleep debt is under further investigation." (abstract, conclusions, passage verified)

  pubmedfull study (doi)

Thousands of quality peer-reviewed studies show that mindfulness meditation is useful for improving focus, managing stress and anxiety, and improving mood.

"by now, there are thousands of quality peer-reviewed studies that emphasize how useful mindfulness meditation can be for improving our focus, managing stress and anxiety, improving our mood, and much more." (said at 2:32:51)

While a very large body of peer-reviewed literature exists on mindfulness meditation, describing it as 'thousands of quality peer-reviewed studies' overstates the volume of high-quality, rigorous evidence. Major systematic reviews and meta-analyses (such as Goyal et al., 2014 in JAMA Internal Medicine) screened tens of thousands of citations and identified only dozens to hundreds of randomized trials meeting rigorous methodological standards (such as active control comparisons). Furthermore, while mindfulness-based interventions demonstrate small to moderate improvements in anxiety, depression, and psychological stress, evidence for improvements in attention/focus, positive mood, and cognitive performance is more limited, mixed, or of lower certainty.

• partial: Meditation programs for psychological stress and well-being: a systematic review and meta-… (JAMA internal medicine 2014) · cited 2355x in the literature

  "After reviewing 18 753 citations, we included 47 trials with 3515 participants. Mindfulness meditation programs had moderate evidence of improved anxiety (effect size, 0.38 [95% CI, 0.12-0.64] at 8 weeks and 0.22 [0.02-0.43] at 3-6 months), depression (0.30 [0.00-0.59] at 8 weeks and 0.23 [0.05-0.42] at 3-6 months), and pain (0.33 [0.03- 0.62]) and low evidence of improved stress/distress and mental health-related quality of life. We found low evidence of no effect or insufficient evidence of any effect of meditation programs on positive mood, attention, substance use, eating habits, sleep, and weight." (abstract, results, passage verified)

  pubmedfull study (doi)