In an interesting study published recently in Current Biology (van der Helm E, Yao J, Dutt S, Rao V, Saletin JM, Walker MP. REM Sleep Depotentiates Amygdala Activity to Previous Emotional Experiences.
Your brain cycles through several stages during sleep, and REM sleep might be the most critical. This mysterious phase, where dreams unfold and memories solidify, accounts for roughly a quarter of ...