I’ve been experiencing intense muscle burning upon the slightest exercise. For example, while climbing a flight of stairs I feel muscle burning in my legs by the ninth step. The burning feels like it engulfs the rest of my body (travelling upward).
And when I ride my bike to work I have to go very slowly so it doesn’t overtake me. It feels like an internal acid bath.
Also, my heart doesn’t seem like it’s producing enough energy to accommodate slight or moderate exercise. This is very abnormal for me. Normally I can perform very well.
What is this? Does anyone have any insight?
I know forum diagnosis is limited. But any insight would help.