Bio-alarm Clocks: The New Wake-up Call Study of the sleep cycle in humans has led to the invention of bio-alarm clocks. This innovative devices track the different rhythms of your body as you pass through different stages of your sleep and then wake you at the best time – so that you do not feel sleepy on waking up. To know how bio-alarms clocks work, you have to first … [Read more...] about Slow Wake up, REM Cycle, Sleep Wave, Bio, Sleep Rythm, Body Rythm Alarm Clock