According to research published by the British newspaper Independent, sleeping naked has a number of beneficial properties for your body.
Initially, it helps your body to drop… temperatures, which results in deeper sleep and therefore more rest.
According to an Australian study, the drop in temperature is necessary to have a good, quality, sleep.
Researchers also claim that it boosts your metabolism, helping you lose weight more easily as your body burns more fat to produce heat.
In any case, as the article states, it helps your skin to "breathe" better.