Many of our products are based on scientifically researched principles relating to sleep, light, breathing, and recovery. Consider the effect of blue light on melatonin, or the benefits of nasal breathing for deep sleep. In practice, our customers often notice a difference after just one night—both physically and mentally. Some products require a short period of adjustment, but the effect is quickly felt when used consistently. Would you like to accurately track your progress? We recommend using a sleep tracker or other measuring device. This allows you to see the impact in numbers, in addition to what your body and mind already feel.