Placing a bar of soap under the bedsheet to relieve nighttime leg cramps is a home remedy that has been passed down through families for generations. Simple, inexpensive and requiring almost no effort, the trick still has devoted followers — even though no strong scientific evidence currently supports it.
A bedtime ritual passed down through generations
The method is straightforward: a dry bar of soap is gently rubbed across a fitted sheet, particularly around the area where the legs and feet rest. Alternatively, some people simply place the bar underneath the sheet near their feet before going to bed.

