https://blogs.mercola.com:443/sites/vitalvotes/archive/2025/11/07/consistent-bedtimes-help-avoid-latenight-cortisol-surges-study-finds.aspxGoing to bed at the right time may be one of the best ways to get deeper, more refreshing sleep. Experts say staying up too late can throw off your hormones — especially cortisol and melatonin, which control stress and sleep. After 11 p.m., theenCommunityServer 2008.5 SP1 (Debug Build: 31106.3070)