According to a theory proposed

According to a theory proposed by the National Library of Medicine, sleep is essential for energy conservation. This is because our metabolic rate drops during sleep, resulting in daily energy savings of up to 15 percent. This theory argues that sleep was an evolutionary development, reducing energy use during those times—mainly at night—when it was less practical to hunt for food. On the other hand, sleep left our ancestors more vulnerable to predators Likewise, the restorative theory argues that sleep is necessary for the body to undertake improvements and regrowth, including muscle repair, protein synthesis, tissue growth, and hormone release. Some sleep researchers have hypothesized that without enough sleep, the brain may not be able to clear toxins effectively. สล็อตเว็บตรง