The r/sleep community recommends a holistic and strict approach to lifestyle hygiene (cool temperature, total darkness, early cessation of caffeine and meals, physical exercise) as the central pillar for regulating disrupted sleep.

noli's read

Science broadly supports the impact of the environment on sleep: meta-analyses confirm that a cool bedroom (around 18°C) promotes sleep onset by facilitating the decrease of core body temperature. The use of protocols such as stopping caffeine after noon is consistent with its prolonged half-life, although individual sensitivity varies according to genetic factors (observational studies). The link between intense physical exercise and improved sleep quality is well documented by systematic reviews, although timing is crucial to avoid stimulation too close to bedtime. The idea of a warm bath before sleep, mentioned in the comments, is validated by RCTs showing that it helps dissipate body heat through vasodilation. However, certain practices, such as a very early dinner or the ketogenic diet, are more a matter of personal experience than universal clinical proof, as the glycemic response is highly variable. The community generally converges on these principles, validating them as optimization tools rather than a rigid necessity.

the sources

1. 1Lan L, Tsuzuki K, Liu YF, Lian ZW. 2017
2. 2Brown TM et al. 2022
3. 3Gardiner C et al. 2023
4. 4Yoshitake R, Park I, Ogata H, Omi N. 2023
5. 5r/sleep