When we sleep, our bodies go through different stages of activity, which can be broadly categorized into two main types: non-rapid eye movement (NREM) sleep and rapid eye movement (REM) sleep. NREM sleep is characterized by slower brain waves, lower body temperature, and reduced heart rate, while REM sleep is marked by increased brain activity, vivid dreams, and heightened heart rate.
When we sleep, our bodies go through different stages of activity, which can be broadly categorized into two main types: non-rapid eye movement (NREM) sleep and rapid eye movement (REM) sleep. NREM sleep is characterized by slower brain waves, lower body temperature, and reduced heart rate, while REM sleep is marked by increased brain activity, vivid dreams, and heightened heart rate.