Even though E1 looks like it would be an easy schedule for beginners and non-nappers, the adaptation results in the community over the years do not reflect this. There have been many reported problems from beginners over the course of adaptations that prevented them from reaching the adapted state:
inability to fall asleep in the nap even after many weeks
high sleep onset for the nap after many weeks not allowing for enough sleep for the nap to sustain wakefulness effectively
in some rarer cases, frequent oversleeping from the nap. This may suggest that these sleepers have a stronger tendency for a daytime core rather than a short nap.
