Are there any regular runners on here? I wonder, have you ever come to the conclusion that the rise in your body temperature that results from this exercise is responsible for an imminent flare-up of symptoms? This morning I felt like every stride was the same as going down a step, only to feel like climbing back up two steps. My head was spinning and I felt as though I could not focus just to keep in a straight line. The fatigue I've got used to experiencing every 2 minutes seems to now be combined with spinning head and serious brain fog, along with heavy tingling limbs. How do you stick to your running habit?!