Lesson 26: Progressive Muscle Relaxation

The previous lesson used breathing to engage the parasympathetic nervous system. This lesson uses the muscles. Anxiety tends to produce chronic tension — tight shoulders, clenched jaw, stiff neck — that you may not even notice until someone points it out or until it causes pain. Progressive muscle relaxation teaches you to notice that tension and release it.

Module: 8, Body and regulation

Learning objective

By the end of this lesson, you should be able to explain how PMR works, practice a basic sequence, and know when to use it.

The concept: tension you don’t notice

Anxiety keeps the body in a state of partial readiness. The fight-or-flight response (Lesson 9) tenses muscles for action. When the action never comes, the tension stays.

Edmund Jacobson discovered in the 1930s that people could learn to reduce muscle tension by first deliberately increasing it [1]. The contrast between the tensed and released state teaches the body what relaxation actually feels like.

Bernstein and Borkovec refined the technique into a systematic protocol: tense a muscle group, hold for about 5–7 seconds, release, and notice the difference for 15–20 seconds. Then move to the next group [2].

The basic sequence

Work through these muscle groups in order. For each: tense for 5–7 seconds, release, notice the difference for 15–20 seconds.

Group	How to tense
Hands and forearms	Make a fist, squeeze
Upper arms	Bend the arm, tense the biceps
Shoulders	Raise shoulders toward ears
Forehead	Raise eyebrows, wrinkle forehead
Eyes and cheeks	Squeeze eyes shut
Jaw	Clench teeth gently, press tongue to roof of mouth
Neck	Press head back gently against a support
Chest	Take a deep breath, hold it
Stomach	Tighten abdominal muscles
Upper legs	Press thighs together, tense quadriceps
Lower legs	Point toes up toward shins
Feet	Curl toes

A full sequence takes 15–20 minutes. With practice, you can combine groups (all of the upper body, all of the lower body) and shorten it to 5–10 minutes.

What the research shows

A meta-analysis of relaxation training for anxiety found that techniques including PMR produced significant reductions in anxiety, with medium to large effect sizes [3]. A review of mechanisms suggested that PMR works through both direct physiological effects (reduced muscle tension and autonomic arousal) and cognitive effects (increased sense of self-efficacy and control over physical states) [4].

Applied relaxation, which combines PMR with cue-controlled techniques, was found to be as effective as CBT for generalized anxiety disorder in a direct comparison [5].

A worked example

The following is a fictional example used for teaching.

Kai sits at a desk all day and carries significant tension in his shoulders and jaw. He doesn’t notice it until the headaches start.

He begins practicing PMR for 15 minutes each evening. During the first session, he discovers that his shoulders are already at about 70% of maximum tension before he even tries to tense them. The release feels dramatic.

After two weeks, he can identify rising tension during the workday and do a quick release of his shoulders and jaw in about 30 seconds. He notices that the chronic headaches have reduced.

The key insight for Kai was not the relaxation itself but the awareness of tension he didn’t know he was carrying.

A common misunderstanding

“Relaxation means I’ll be letting my guard down.” Some people with anxiety resist relaxation because the anxiety feels protective — as though staying tense means staying alert. But chronic muscle tension doesn’t protect you from anything. It consumes energy, causes pain, and maintains the physical component of the anxiety cycle. Releasing it doesn’t remove your ability to respond to genuine threats; it removes unnecessary background noise.

Optional reflection

Try the basic PMR sequence once today. Pay attention to which muscle groups hold the most tension before you even begin tensing. After the session, rate your overall tension on a 0–10 scale and compare it to before. Practice daily for a week and notice whether the background tension level changes.

When to get support. If you experience relaxation-induced anxiety (anxiety that increases when you try to relax), this is a recognized phenomenon. It doesn’t mean relaxation is wrong for you, but it may need to be approached differently. A therapist can modify the technique or suggest alternatives. If chronic muscle tension is causing significant pain, see a GP. If you are in crisis, contact emergency services or a crisis line: in the UK and Ireland, Samaritans on 116 123; in the US, call or text 988.

Recap

• PMR involves systematically tensing and releasing muscle groups to reduce chronic tension.
• The contrast between tension and release teaches the body what relaxation feels like.
• Meta-analytic evidence supports its effectiveness for anxiety.
• Regular practice builds body awareness, helping you notice and release tension during the day.
• It works as a body-level entry point in the hot cross bun model.

Previous lesson: Lesson 25: Controlled Breathing | Next lesson: Lesson 27: Mindfulness Basics for Anxious Beginners