According to Dr. Matt Roman, a medical marijuana physician, cannabis is a natural sleep aid because it can help restore the normal sleep cycle, which revolves around the circadian rhythm, which wears out because of the modern-day pace of life. If you struggle with a sleep disorder or find it hard to sleep after a tough day, cannabis could be an option. The pain-relieving effects of marijuana might help ease chronic pain. At the same time, its anti-anxiety properties can calm a stressed mind and body.