nervous system

The window of tolerance

By Valentina Alaimo, LCSW · More notes

Have you ever reacted to something and thought, where did that come from? One minute you're fine, and the next everything feels like too much. Or maybe you go the other way: foggy, numb, a little far away.

You're not overreacting, and you're not broken. Your nervous system is doing exactly what it was built to do. There's a helpful way to picture it, called the window of tolerance, a term from psychiatrist Dr. Dan Siegel.

Three zones

Inside the window, you can feel stress and still think clearly. Hard feelings show up, but they're workable. You can listen, make choices and stay connected to yourself and others.

Above the window, your system is revved up. This can look like anxiety, racing thoughts, irritability, panic or feeling on edge. Your body is preparing to fight or run.

Below the window, your system powers down. This can look like numbness, exhaustion, brain fog, disconnection or wanting to hide. It's your body's way of protecting you when things feel like too much.

Both ways out of the window are protective. Neither one is a character flaw.

What makes the window smaller

Everyone's window gets narrower sometimes. Common reasons include:

• Poor sleep. Research suggests that sleep loss makes the brain more reactive to stress and can raise anxiety the next day.
• Ongoing stress, like work pressure, caregiving or money worries.
• Pain, illness or hunger. Your body has fewer resources to spare.
• Old experiences that taught your system to stay extra alert.

The encouraging part is that the window can also grow. Rest, connection, movement and practice all help widen it over time.

Coming back from above the window

When you're revved up, the goal is to slow things down.

• Make your exhale longer than your inhale, like breathing in for 4 and out for 6.
• Splash cool water on your face or hold something cold.
• Move the energy through: walk, shake out your arms or push against a wall.
• Put your feet on the floor and name five things you can see.

Coming back from below the window

When you're shut down, the goal is to gently wake things up.

• Stand up and stretch, or sway gently.
• Look around the room slowly and let your eyes land on something you like.
• Try a strong, pleasant taste or scent, like peppermint or citrus.
• Put on music with a beat and let your body move a little.

Try this: Over the next week, notice which way you tend to go when you're stressed: up, down, or both. You can even give your zones names. Simply noticing sooner is a skill, and it's how you start finding your way back faster.

Nobody stays inside their window all the time. The goal isn't perfection. It's knowing your signs and having a few tools you trust.