Interestingly, while chronic sleep deprivation is harmful, studies show that a single night of sleep deprivation can have a rapid, temporary antidepressant effect in 40-60% of people with depression. I tried this after burning out on my third startup, and it helped me short-term when I needed it most. You can read more about the research Penn Medicine
(https://www.pennmedicine.org/news/news-releases/2017/septemb...).