Today's three-minute lesson

Why your weekend might be setting you up for a difficult Monday.

Have you ever felt glued to the bed on a Monday morning, even though you had a lie-in over the weekend?

You might assume you simply need more sleep.

But the problem may be that your weekend routine has shifted your body clock.

Many of us follow one routine during the week...
and a completely different one at the weekend.

We stay up later.
We sleep in longer.
We eat breakfast later.

As you learned yesterday, your body uses the timing of sleep, light, food and movement as signals to help regulate its internal clocks.

When all of those signals arrive later at the weekend, you're effectively telling your body that the day now starts later.

Then on Monday morning, we expect it to ignore those new signals and switch straight back into work mode.

For many people, it doesn't.

Researchers call this social jet lag.

Unlike travelling across time zones, you haven't actually gone anywhere.

You've simply shifted your body clock.

Imagine flying from London to New York every Friday evening...
then flying back again every Sunday night.

You'd probably expect to feel tired, sluggish and out of sync for a day or two afterwards.

That's similar to what many people unknowingly do to themselves every weekend.

This doesn't mean you should never enjoy a late night or have a lie-in.

Life is for living. But if you have an important start to the week, it may be best to forgo the late night over the weekend.

This is why we're placing so much importance on one habit this week:

Getting up at roughly the same time every day.

If you've stayed up much later than usual, getting up at your normal time may mean accepting that you'll feel tired for a day.

That might not feel appealing in the moment, but sleeping later can push your body clock even further back and make it harder to return to your usual routine, leaving you out of sorts for a couple of days rather than just tired for one.

Sometimes the quickest way back into rhythm is to accept a slower, more tired day, keep your usual wake-up time and allow your sleepiness to build naturally for that evening.

Even if bedtime changes occasionally, a consistent wake-up time gives your body a reliable anchor.

Over time, that consistency helps your body know when to be alert...
and when to become sleepy.

This week isn't about making every day identical.

It's about giving your body one consistent signal it can rely on.