Couples who sleep together may not always sleep better due to issues like sharing covers or being disturbed by their partner. The Scandinavian sleep method is one strategy that can be tried, where each person sleeps under a separate blanket while sharing a bed. This approach is common in countries such as Denmark, Norway, and Sweden.

The method's benefits and the science behind couples sleeping together are topics of interest. A behavioral scientist at the RAND Corporation, Wendy Troxel, has written about the subject in her book "Sharing the Covers".

Further details about the Scandinavian sleep method and its effects on sleep quality are available from the source.