Trouble falling asleep? Here are some apps, devices to help you monitor your sleep or help you get a better one Marc Saltzman Replay Video UP NEXT Whether you have trouble with it, get too much or don't get enough, we can all appreciate the health benefits of sleep. After decades of research, the medical community has confirmed at least seven hours of sleep a night promotes better concentration and productivity and results in lower risk of heart disease, a stronger immune system, lower weight gain and fewer instances of depression. © Headwaters Inc. Along with blocking ...