We are currently working on a review on the effects from flotation REST on sleep. (Flotation-REST is a method for deep relaxation where a person is contained in a stimuli-restricted environment and floats in water with a high salt content). Apart from one dissertation (Ballard, 1989) and multiple studies from one specific lab (Karlstad University, Sweden), we have failed to find studies that explicitly have investigated the effects from flotation REST on sleep.

There might be studies where sleep was measured among many variables but never mentioned in the article's title, key words or abstract. I would be vey grateful for any leads on where appropriate studies might be found. If you have unpublished data on this topic, we would also like to get in touch with you.

Thank you for reading this far!