A good night’s sleep is invaluable! Not only does it help a person to feel better the next day and be more mentally alert, but it is also vital in the long run for a person’s health. The deep sleep cycle is when the body repairs tissues, builds bone and muscle, and helps to strengthen the immune system. That’s why people invest in mattresses such as the natural latex mattress boston, read up on all the tips to help ensure a restful night’s sleep such as not watching TV in bed, and stay away from caffeine in the late afternoon and evening.