If you’re one of the millions of people who have trouble sleeping, you may have considered trying cannabis. The cannabis plant has been used for centuries as a sleep aid, as it helps to regulate systemic bodily functions and biorhythms, including the sleep cycle. One recent study found that cannabis shortens the time it takes to fall asleep, both for people with sleep problems and people who fall asleep without trouble. Among people with active difficulty falling asleep, cannabis use resulted in an average of 30 minutes less time in falling asleep. Among the group of already strong-sleepers, cannabis helped them fall asleep even faster, by 15 minutes.