• Welcome to Phoenix Rising!

    Created in 2008, Phoenix Rising is the largest and oldest forum dedicated to furthering the understanding of, and finding treatments for, complex chronic illnesses such as chronic fatigue syndrome (ME/CFS), fibromyalgia, long COVID, postural orthostatic tachycardia syndrome (POTS), mast cell activation syndrome (MCAS), and allied diseases.

    To become a member, simply click the Register button at the top right.


  1. nerd

    Excessive exercise training causes mitochondrial functional impairment and decreases glucose tolerance in healthy volunteers

    Authors: Flockhart, Mikael & Nilsson, Lina & Tais, Senna & Ekblom, Björn & Apró, William & Larsen, Filip Published: March 18, 2021 doi: 10.1016/j.cmet.2021.02.017 Highlights Summary