Ok this is the first I've heard of this tip, any of you ladies used it?

Ok so I had lunch with some friends who have already done their momma duties and are now grandmas and today they were giving me tips for when my baby arrives and one I found so bizarre.. Warm water with lettuce and bathe the baby with it at night to help them fall asleep.. Or put leaves on the inside bottom of the pillow sham.. Last but not least warm up lettuce in a pot with water to make on a sort of tea and feed it on a bottle.. Apparently this helps soothe the baby when you've tried everything and they can't sleep at night. Anyone have experience with this?