Although my sleep has been patchy for some time I don't consider I suffer insomnia or wake too early, more that I wake feeling listless even after 7-8 hours of sleep and energy runs out ever earlier in the day. I was recommended the Zeez as a product that might help improve the quality of my sleep and wasn't sure what to expect, because I thought diminishing energy a normal aspect of hitting my sixties. I found the research about the benefits of deep sleep convincing enough to take the trial and I have to say although the positive affects took 2-3 weeks for me to notice, the results are definitely positive. I now find I have more energy particularly in the mornings and I also feel somewhat calmer throughout the day which although subtle has been commented on by my family since using the Zeez at night. It's a small simple device to use that didn't disturb my partner which I have to say is a big plus. It's quite a pricy product and ended up an unexpected purchase but with my renewed energy very worthwhile just the same.