The evidence regarding sleep is clear: it’s one of the main drivers of well-being. Yet for perimenopause women seeking better sleep in midlife, quality rest often feels impossibly out of reach. The Undeniable Power of Sleep Matthew Walker, PhD, in his book Why We Sleep, shares a thought experiment that brings the power of sleep into sharp focus. He describes a fictitious advertisement for a revolutionary treatment that makes you live longer, enhances memory and creativity, makes you more attractive,