Are you suffering from burnout? Do you wake up every morning feeling lethargic, exhausted, tired, grumpy or simply unmotivated? It could be due to a sleep pattern that is not assisting your body to recover optimally. The Sleep Calculator works on a 90 minute sleep cycle and calculates the perfect time between these cycles for you to get up feeling refreshed. On average, a person ought to experience 5 or 6 of these sleep cycles a night to wake up feeling refreshed and energized. By using this free application, Sleep Calculator, you can work out exactly what time you ought to go to bed and at what time is best for you to get up. Calculate the best time to sleep – Sleep Calculator Featured photo credit: BusinessInsider via businessinsider.com