Degraded?

Chronic Fatigue Syndrome or Myalgic encephalomyelitis is a long-lasting debilitating condition, sometimes seen after a viral infection. The UK's NICE have just removed using Graded Exercise Therapy as a treatment for this ailment (https://www.theguardian.com/society/2021/oct/29/health-watchdog-nice-publishes-delayed-me-guidance). In Graded Exercise Therapy patients used to be encouraged to gradually but progressively increase levels of exercise. The approach doesn't seem to work and can actually set some people back, in their attempts to return to a normal life and/or work.