For all-day energy, you need a perfect sleep. Do you sometimes go to bed feeling wired and tired at the same time? Rebalance your body with deep breathing. Simple, slow breathing before bedtime erases stress, helping to improve your zzzzs and lengthen the amount of time spent in REM sleep, the deepest and most useful stage, say Harvard sleep experts. Why it works: Folks who don’t sleep well often have high levels of the stimulating hormone adrenaline, making them feel perpetually wired. Research proves deep breathing can lower those levels by 50%. For the best results, researcher Sat Bir Khalsa, Ph.D., recommends closing your eyes and mouth, relaxing your face and inhaling for a count of four. Then hold your breath for a count of seven and exhale to a count of eight. Repeat ten times.