Initially purchased for my elderly parents who had trouble sleeping for years. After trying for 2 weeks my mom said she didn't noticed any difference and same goes for my dad althought he admits he felt better energy in the mornings. Then I tried for my self and I believe it does make a difference to my sleep quality. I am a very bad sleeper my self but since using the SleepEarthed sheet I've notice an improvement in the quality of my sleep. I believe I sleep deeper and feel more energized in the morning. I also feel that this is an effect that slowlt builds up and as the time goes my sleep gets better and better. My husband also feels it is helpful. Overall I feel it does help improve the quality of sleep but it takes a feww weeks to really see the results.