What hormone is primarily released during deep, dreamless sleep?

Human growth hormone (HGH) is primarily released during deep, dreamless sleep, also known as slow-wave sleep. This stage of sleep is crucial for physical recovery and growth, and HGH plays a significant role in tissue growth, muscle repair, and overall cellular regeneration. The release of HGH is at its peak during the early hours of deep sleep, which aligns with the body's natural circadian rhythms.

Deep, dreamless sleep is essential for various restorative processes, and the secretion of HGH during this time supports these functions, making it vital for adolescents and those participating in physical training, as it aids in growth and muscle development. This connection between deep sleep and hormone release underlines the importance of sleep for overall health and well-being.