Insomnia is one
of those definitions in medicine that is somewhat variable. People who
suffer from insomnia will define it as difficulty going to sleep, unable to go
to sleep for hours, or waking up in the middle of the night after having
trouble sleeping. The bottom line is insomnia cuts through all of those
fabrics. It's important when you are struggling with insomnia that you
have good sleep hygiene. That means not taking work to bed, making sure
it's nice and quiet, and it's a comfortable place to sleep.