MSN: Can Lack of Sleep Cause Weight Gain | The Science Between Sleep, Hormones, and Weight Can Lack of Sleep Cause Weight Gain | The Science Between Sleep, Hormones, and Weight Science Daily: Lack of sleep can increase the risk of cardiovascular disease AOL: Experts reveal the six surprising ways lack of sleep can impact your brain Experts reveal the six surprising ways lack of sleep can impact your brain Medical News Today: Heart attack, stroke risk can double from irregular bedtimes, sleeping less than 8 hours Heart attack, stroke risk can double from irregular bedtimes, sleeping less than 8 hours Mediafeed on MSN: Can not getting enough sleep affect your intimate life?