Progressive Muscle Relaxation. How It Works and When to Use It
Progressive muscle relaxation was developed by physician Edmund Jacobson in the 1930s based on a simple observation: you cannot be anxious and physically relaxed at the same time. The technique involves systematically tensing and releasing each muscle group, starting from your feet and working up. The deliberate tension creates a contrast effect. After release, the muscle relaxes more deeply than it would through passive rest alone. Clinical trials show it reduces anxiety scores by 30 to 40% and improves sleep onset by an average of 20 minutes.
By Omar Rantisi, Founder of Therma4 min read
What progressive muscle relaxation is
Progressive Muscle Relaxation, or PMR, was developed by physician Edmund Jacobson in 1938. It is one of the oldest evidence-based relaxation techniques still in clinical use. The original protocol involves systematically contracting and releasing 16 muscle groups.
Modern shorter versions cover 4 to 7 groups in about 15 to 20 minutes. PMR is used in clinical anxiety treatment, sleep medicine, oncology supportive care, and dental anxiety protocols. A 2024 systematic review of adult populations found PMR consistently reduced stress, anxiety, and depression scores.
“The technique doesn't need to be perfect. It needs to be practiced.”
How progressive muscle relaxation reduces anxiety
The technique works on a simple principle. You cannot be physically relaxed and anxious at the same time, because anxiety has a physical component. Holding deliberate tension and then releasing it activates the parasympathetic rebound that follows any voluntary muscle contraction.
Over weeks of practice, the body learns the contrast at a felt level. You stop having to think "I should relax" and start noticing the tension cues earlier, sometimes before they become full anxiety. A meta-analysis of 27 relaxation training studies found medium-large effect sizes for anxiety reduction across PMR and related practices.
How to practice PMR
Lie down or sit in a supportive chair. The technique takes 15 to 20 minutes the first few times, less as you learn the sequence. Tense each group hard but not to the point of cramping. Release suddenly, not gradually.
The contrast between the two is the whole point. If you have any injuries, skip those areas. PMR is one of the few techniques where partial practice still produces measurable benefit, so don't wait for the perfect setup.
How to practice
- 1Settle and breathe
Lie on your back or sit in a chair that supports your head. Take 3 slow breaths. The first round through is about learning the sequence, not perfecting it.
- 2Start at the feet
Curl your toes hard, hold for 5 seconds, release for 10 to 15 seconds. Notice the difference. Move to your calves. Same protocol.
- 3Move up the body
Thighs, glutes, abdomen, hands, forearms, biceps, shoulders. Five seconds of tension, ten to fifteen seconds of release. Don't rush the release. That is where the work happens.
- 4Face and scalp
Squeeze your eyes shut and clench your jaw. Hold for 5 seconds. Release everything in the face at once. The face is where most chronic tension lives.
- 5Whole body sweep
Tense everything at once for 5 seconds. Release for 30. Lie still and notice. The body should feel heavier than when you started.
Common questions
How quickly does PMR work?
Most people feel a noticeable physical shift after the first full session. Anxiety-symptom reductions in clinical trials usually show after 2 to 4 weeks of daily or near-daily practice. Sleep effects often appear sooner because PMR is particularly useful as a sleep-onset tool.
Can I do PMR before bed?
Yes. It is one of the most commonly recommended sleep-onset techniques. Do a shorter version in bed, work up the body, and don't worry about completing the sequence if you fall asleep mid-way. That is the desired outcome, not failure.
When should I not use PMR?
Skip muscle groups with recent injury, surgery, or chronic pain. Some people with severe trauma histories find body-focused techniques activating rather than calming. If that is the case, pair PMR with a grounding anchor like counting or a sensory check-in, or shift to a non-body-based approach for now. Pregnant people should ease off abdominal tensing in later trimesters.
Do I need an audio guide?
Not after the first few sessions. Audio helps with pacing while you learn the sequence. Once the order is familiar, your own internal count works fine. Some people prefer the structure of an audio track long-term, which is also fine.
Is PMR backed by research?
Yes. PMR has more than 80 years of evidence and is one of the most studied relaxation techniques in clinical psychology. A 2024 systematic review and a foundational 2008 meta-analysis both found significant effects on anxiety, stress, and depression across diverse populations.
Related strategies
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Omar Rantisi
Founder of Therma. UCLA Math + Sociology. Building tools for the space between silence and therapy. Not a therapist. Just someone who needed this to exist.
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