I started about a year ago getting fatigued and less functional after exercise, which I know is an MS thing (though I’d carried the diagnosis, useless as it is, for over 15 years without experiencing this). But I started doing simple passive range of motion stretching, and I feel the same way after that. That makes me wonder about the mechanism of the fatigue, that it can occur without any exertion, but only with passive stretching. Does anyone know what causes it? Could there be some chemical that your muscles release when they are exercised in any way? Knowing that would make the problem seem amenable to an antidote. I'd love to know Wise’s thoughts on this.