Abstract: Background: The purpose of this study was to test the impact of the Natural Frequency Technology (NFT) found in Philip Stein™ Watches (thought to promote overall well-being) and Sleep NFT, (a combination of frequencies designed to promote sleep) on sleep parameters in normal healthy individuals who routinely experience un-refreshing sleep. NFT is a sub 8Hz … [Read more...] about A Randomized, Double Blind, Placebo Controlled, Crossover Evaluation of Natural Frequency Technology™ and Sleep Natural Frequency Technology on Sleep in Normal Subjects with Un-refreshing Sleep