Body Atlas

Emotion, Drive and Control · Brain

Why is self-control harder when I'm tired?

Restraint is an active process, and it can be depleted.

The simple answer

The alarm system is fast and the wanting system is loud. Something has to weigh them against your longer-term intentions and, often, override both. That's the front of your frontal lobe.

Go deeper

There's more: restraint is an active process, and it can be depleted. The full explanation — and the interactive version you can tap and quiz yourself on — lives in the app.

Explore this concept in Body Atlas →

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