Lesson 1 explained that your body clock is influenced more by when you wake up than by when you go to bed. This lesson shows you how to use that information.

A consistent wake time means getting out of bed at the same time, seven days a week. It acts as the anchor for your entire sleep schedule.

It helps in two ways:

• It stabilises your body clock, making the timing signals from your sleep system more predictable.
• It creates a consistent period between waking up and your next opportunity to sleep, allowing sleep drive to build throughout the day.

People experiencing insomnia often adjust their wake time according to how the previous night went. After a difficult night, they may stay in bed later or try to sleep longer. After a better night, they return to their usual schedule.

This means the body clock receives a different timing signal each morning, which makes it harder for the sleep schedule to stabilise.

Choose a wake time you can realistically keep. Do not choose the time you think you should wake up. Choose a time when you can genuinely get out of bed, even on a Saturday after a difficult week.

If that time is 7 a.m., choose 7 a.m. If 7:30 a.m. is more realistic, choose that instead. Consistency is what makes the wake time useful. A realistic time you can maintain is more helpful than an ambitious one you regularly miss.

Weekends are not an exception. Sleeping later to recover at the weekend is one of the most common habits that can maintain insomnia. It is also one of the hardest to change because it provides immediate relief, while the effects are less visible.

A later wake time can shift your body clock and make sleeping more difficult at the beginning of the following week. Because the effect appears later, the connection can be difficult to notice.

Try to keep the same wake time on Saturday and Sunday as well, at least until your sleep has become consistently better.

Your bedtime does not need to be fixed in the same way. Go to bed when you feel sleepy, not at a preset hour or at the time you think you should be in bed.

Your wake time anchors your body clock. Sleepiness tells you when your body is ready to sleep. Over time, these two points may begin to stabilise together, but the wake time remains the fixed anchor.

If you keep only one practice from Unit 2, make it this one. A consistent wake time, maintained every day, creates the foundation for everything that follows.