Sleeping more than 6 hours per night is an absolute necessity, and sleeping less, even if it seems to work, is detrimental to emotional stability and health.

noli's read

This advice aligns closely with the current scientific consensus on the importance of sleep. Robust meta-analyses (notably those published in the Journal of the American Heart Association) indicate that a sleep duration of less than 7 hours is associated with an increased risk of cardiovascular and metabolic problems. The assertion that individuals who think they 'function well' on 4 hours of sleep often underestimate their cognitive deficits is supported by randomized controlled trials (RCTs), showing that performance declines progressively without the subject realizing the extent of their fatigue. It is accurate that lack of sleep impacts emotional regulation, which corroborates the observation regarding 'meltdowns.' The idea that this is a biological necessity and not a lifestyle preference is widely accepted in circadian rhythm research. There is no notable exaggeration here, as science indeed emphasizes that individuals capable of thriving long-term on 4 hours of sleep are extremely rare genetic exceptions.

the sources

1. 1Watson NF et al. (AASM & Sleep Research Society) 2015
2. 2Hirshkowitz M et al. (National Sleep Foundation) 2015