Hi, I have serious weakness in my legs. I began running last year for the first time in my life - I lost weight, began to slow down the running, and a few months after that noticed weakness in my legs.

It's hard to walk with energy or power, can't run, difficulty walking up or down stairs for my knee will at times give in and I will fall. I've been working out as much as I can and still don't feel better.

Any ideas of what this could be? It's progressively gotten worse over time. I had an emt done at my neurologist and everything was fine.