Raphael Vallat

architecture.

Raphael Vallat, PhD, and Perrine-Marie Ruby, PhD, note that, considering the gigantic amount of scientific evidence linking poor quality or insufficient sleep to adverse health outcomes, including shorter life expectancy, one may seriously question the health consequences of regularly practicing LD induction methods.

Don't fret if you're just practicing lucid dreaming here and there.

The issue of fragmented sleep architecture will only really come up if you make a regular habit of waking up in the middle of the night.