Steeping Lettuce?
I have heard people are steeping lettuce, particularly romaine lettuce to help with sleep. It's believed to help because it contains a substance called Lactucarium, which is thought to have mild sedative properties. However, the concentration of Lactucarium in lettuce is very low, and steeping it in water likely doesn't extract enough of this substance to have a noticeable effect on sleep. This is one trend I recommend not wasting your time on.