The Power of Rest: Why Sleep Alone is Not Enough with Dr. Matthew Edlund Edlund is an award-winning, internationally recognized expert on rest, circadian rhythms says, in his book, that Americans are dangerously rest-deprives and more sleep isn’t the answer. He dispels some common myths about rest and sleep: Myth #1 – Sleep is the same for men and women – False! As we age, the percentage of deep sleep declines for both sexes but far more in men than in women