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Health Anxiety~15 min

Body Vigilance Experiment

Test how attention to the body creates and amplifies sensations — demonstrating that body scanning is part of the problem, not the solution.

Written by Tarun Vermani, Trainee Clinical Psychologist Last reviewed

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This experiment demonstrates a key principle: paying close attention to any part of your body will produce sensations. Focus on your hand for 2 minutes and you'll notice tingling, warmth, or pulsing — sensations that were always there but that you only notice when you look for them. This is exactly what happens with health anxiety: scanning your body for symptoms creates the very sensations you then misinterpret.

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Before the Experiment

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The Experiment

Focus your full attention on your left hand for 2 minutes. Notice every sensation.

Now Apply This to Your Health Anxiety

Reflection

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Change in belief—

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When to use the Body Vigilance Experiment

The Body Vigilance Experiment is an interactive cognitive behavioural therapy (CBT) worksheet, most often used in CBT for health anxiety.

It is designed to be used within therapy rather than as a standalone self-help tool: a therapist introduces it, works through it collaboratively, and helps make sense of what it surfaces. You can preview the full worksheet above, then assign it digitally for clients to complete between sessions on any device — or download it as a print-ready PDF.

How it works

Most people work through it in around 15 minutes. It moves through four short steps:

  1. Before the Experiment
  2. The Experiment — Focus your full attention on your left hand for 2 minutes. Notice every sensation.
  3. Now Apply This to Your Health Anxiety
  4. Reflection

Completed on the Formulate platform, your client's answers are saved automatically and shared straight back to you, so you can review them before the next session rather than waiting for a paper copy to come back.

The CBT approach behind it

In common with other CBT methods, the Body Vigilance Experiment works by testing fearful predictions through real-world behavioural experiments. The aim is not positive thinking but a clearer, shared understanding of what keeps a difficulty going — and practical, testable ways to change it.

Because it is a CBT tool it stays focused on the here-and-now links between thoughts, feelings, the body and behaviour, and it works best as one part of a wider course of therapy rather than as advice or a diagnosis.

Evidence & sources

This worksheet is grounded in established cognitive behavioural therapy theory and practice. Key sources include:

  • Salkovskis, P.M. & Warwick, H.M.C. (2001). Making sense of hypochondriasis: A cognitive model of health anxiety. In G.J.G. Asmundson et al. (Eds.), Health Anxiety. Chichester: Wiley.
  • Wells, A. (1997). Cognitive Therapy of Anxiety Disorders. Chichester: Wiley.

For use alongside professional support

Formulate provides educational CBT resources for use with a qualified therapist. They are not a substitute for professional assessment, diagnosis, or crisis care.

If you need urgent help now:

  • Emergency services: 999 — if you or someone else is in immediate danger
  • Samaritans: 116 123 — free, day or night, 365 days a year
  • SANEline: 0800 689 5555 — 4:30pm–10:30pm, every day

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