Everyone knows the value of sleep but it can be especially tough to come by as we head into the holidays and one of the busiest times of year. With the help of some great apps, you can put worries about long, sleepless nights to rest. Sleep Cycle 5.0 wakes you when your body says it’s time. Simply place your smartphone next to your bed and the app does its thing analyzing the sound of your sleep. When the app is able to determine you’re in the lightest phase of sleep, it wakes you up. The developers say by waking in the lightest phase of sleep, you will not feel…