Use of weed may actually harm sleep, a December 2021 study has found. The research, published in a BMJ journal, revealed adults who use weed 20 or more days during the last month were 64% more likely to sleep less than six hours a night and 76% more likely to sleep longer than nine hours a night.
https://www.cnn.com/2021/12/06/health/marijuana-sleep-problems-study-wellness/index.html
