Productive Sleep - Alarm Clock iPhone App Review
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Have you ever noticed the days when you feel alive and fresh after you slept a few hours at night? And sometimes you might feel tired and exhausted even after 10 hours sleeping night?! There is a scientific explanation for these situations: our sleep consists of cycles and if we break them, we influence badly on the organism restoring process. "Productive sleep" is a unique alarm clock, which helps you to feel good no matter if you can sleep as long as you want or you can't.