Place aluminum foil beneath your pillow before bedtime and discover what happens… See more

Some people have started placing a sheet of aluminum foil beneath their pillows, claiming it helps them sleep more peacefully. The idea sounds unusual, but stories about calmer nights and better dreams have attracted plenty of attention online.

There is no strong scientific evidence that aluminum foil itself improves sleep. The metal does not have a proven ability to create better dreams, block harmful energy, or protect someone while they sleep.

However, the ritual may still have a psychological effect. Small bedtime routines can help signal to the brain that the day is ending and it is time to relax. The object itself may not be responsible for the change.