Woman on yoga matThough exercising too close to your bedtime may actually harm your sleep more than it helps, the NHS says that getting enough movement in your day is key to consistently good slumber. Johns Hopkins Medicine writes that we don’t actually know why physical activity helps you snooze. It might be because working out releases “happy chemicals”, endorphins, or because it raises your body’s core temperature, they suggest.A half-hour of exercise is linked to better sleep that same night, nonetheless.And now, a new review has been published in the journal BMJ Evidence-Based Medicine that has named the low-impact exercise that could improve the sleep of