Deep slow wave sleep is considered the central pillar of our physical and mental well-being. In a healthy adult, this stage must correspond to approximately 25% of sleep time.

The brain takes advantage of this phase to perform a great sorting of information, a consolidation of memory and at the same time a cleansing of its toxins. As we age, the body encounters more sleep interruption factors that will alter the deep sleep phase: discomfort related to menopause, a capricious bladder, joint pain, snoring.