SLEEP PEBBLE REVIEW. My name is Mark I've been a user of the sleep pebble for well over a year now, and I have to say that even though I do regular nights which are not ideal, and also previously being a life long insomniac, this little device is nothing short of absolutely amazing. From 2 years ago when I first monitored my sleep, I already knew I was a terrible sleeper, but I was shocked to find I rarely got even 5 minutes deep sleep and at best 0:15 minutes REM, the rest was awake or light sleep...two years on with this amazing Sleep Pebble and other strategies, I regularly get 2 hours + deep sleep and 1 and half hours + REM !!! I fairly often see 3 hours + Deep and 2 and half hours REM in around 7 hours total ! Amazing yes for a life long insomniac until 2 years ago ! Oh and has my health improved no end as a result of getting quality sleep too !