CES and insomnia
And now, just before you fall asleep, let me talk about sleeplessness. CES increases daytime vigilance, but it also helps people to sleep deeper and more restfully at night. This is very useful for people who have difficulty falling asleep, or who wake up in the middle of the night and then struggle to fall asleep again.
However, restoring sleep in cases where a person has been suffering from sleeplessness for months or years is not easy. If you suffer from long-term sleep problems, you may have to treat yourself for a number of months before you notice any real difference.