Graded Exercise Therapy (GET): Why to Avoid
1 Critical Warning
Graded Exercise Therapy (GET) remains recommended in some countries despite evidence of harm. GET is contraindicated in ME/CFS and can cause severe, lasting worsening.
2 Why GET Fails
Fundamental misunderstanding: GET assumes deconditioning causes symptoms; increasing exercise reconditions. This is false. PEM is pathological response to exertion (Section Consequences of Energy Deficits), not deconditioning.
Ignores PEM: GET protocols ignore delayed symptom exacerbation, attributing it to “expected discomfort” rather than disease mechanism (Section Consequences of Energy Deficits).
Biomarker evidence: Chapters 6–7 document that exertion triggers immune activation (Section Immune Activation and Inflammation), oxidative stress (Section Replication Status: Not Yet Independently Replicated), and metabolic dysfunction (Section The Energy Chain: Ten Steps from Substrate to ATP) - not adaptation.
Patient harm surveys:
- 50–70% of patients report worsening from GET (Eaton-Fitch et al. 2019) (Wilshire et al. 2018)
- Some become severe/bedbound after GET programs
- UK NICE guidelines (2021) removed GET recommendation due to harm (National Institute for Health and Care Excellence 2021)
- In the largest patient-reported treatment survey to date (Eckey et al. 2025, \(n = 3{,}925\)), GET received by far the lowest Net Assessment Score of any treatment (\(-\) 72.2%), with the vast majority of patients reporting harm and almost none reporting benefit (Eckey et al. 2025). (Severity coverage: all levels; ~20% of ME/CFS respondents were severe/very severe.) This directly quantifies, at large scale, the harm signal reported in smaller surveys — graded exercise is not merely unhelpful but actively harmful across the severity spectrum.
3 If Pressured by Physician
- Cite NICE 2021 guidelines (UK), recent reviews documenting harm
- Request pacing/energy envelope management instead
- Seek second opinion from ME/CFS-knowledgeable physician
- If insurance requires “exercise program,” document that standard GET worsens ME/CFS; request adaptive pacing therapy (APT) instead
4 Safe Activity Increase (If Appropriate)
Only if:
- Baseline symptom stability for 6+ months
- No PEM episodes for 3+ months
- Energy envelope well-established
- Under guidance of ME/CFS-knowledgeable professional
Principles:
- Increase activity 5–10% every 4–6 weeks (very gradual)
- If any PEM → immediately reduce to prior level
- Horizontal/recumbent exercise (recumbent bike, rowing)
- Never exceed anaerobic threshold
- Prioritize activities of daily living over formal exercise