NEWS 30 October 2024 A heart attack unleashes immune cells that stimulate sleep neurons, leading to restorative slumber. Mariana Lenharo Mariana Lenharo is a news reporter for Nature based in New York City. Ample sleep after a heart attack dampens inflammation in the organ, aiding recovery.Credit: GettyImmune cells rush to the brain and promote deep sleep after a heart attack, according to a new study1 involving both mice and humans. This heavy slumber helps recovery by easing inflammation in th...