One of the recommendations that therapists will make to people who suffer from insomnia is to spend less waking time in bed. why do you think spending waking time in bed might interfere with the ability to fall asleep later?

Spending waking time in bed will condition of mind to associate the bed with activities other than sleep. In cases of insomnia, it is important that the bed only be used for sleep, as the aim is for the idea/visual of the bed trigger the need and desire to sleep.

The correct answer is b