Читать книгу The Art of Sleeping - Rob Hobson, Rob Hobson - Страница 35

36 STAGE TWO Stage two is oen referred to as ‘light sleep’ and represents one of the most important parts of the sleep cycle, taking up almost half the night and characterized by a slowing down of both breathing and heart rate. Memories and emotions are processed during this stage, as is the regulation of your metabolism – the chemical processes that occur in the body to maintain life. STAGE THREE Breathing is slowest during this stage of NREM sleep and your muscles also start to relax, while heart rate is regulated. You’re unlikely to be woken up in this stage, and if you are you will feel disorientated for a short while aerwards. e difficulty in waking up at this point in your sleep is one reason why your body tries to get deep sleep over with as quickly as possible. Your body has its own natural drive for deep sleep, so once you have met that, the need dissipates. e third stage normally occurs halfway through the night and your cycle then adjusts to more time in light sleep and REM.