Time-in-bed restriction therapy is considered one of the most effective components of CBTi. You may also see it referred to as sleep restriction therapy or bedtime restriction therapy. It works to build up your body’s need for sleep (also known as your sleep drive) by limiting the amount of time you spend in bed not sleeping.
People with insomnia spend a lot of time in bed while awake. This is referred to as having poor sleep efficiency. To improve your sleep efficiency, the first step is to spend less time in bed. Time-in-bed restriction therapy guides you through this. As your sleep efficiency improves, the amount of time spent asleep increases. It doesn’t take long before you are sleeping through the night once again.
To build your sleep drive, here’s what you need to do:
Dr. Judith Davidson, author of Sink Into Sleep, suggests the following sleep schedule adjustments based on your sleep efficiency calculation:
If last week’s sleep efficiency was |
Your sleep schedule’s set bedtime for this week should be |
Less than 85% | 15 minutes later |
85%-89% | unchanged |
90%-94% | 15 minutes earlier |
95% or greater | 30 minutes earlier |