Hi John,
I just wanted to give you a warm Welcome to NT. I am glad you are posting already. Exercise is the best for us. Standing or even sitting in a chair ones. Whatever people can do, they should try. JMO.

Nice to meet you.
I haven't tried Ampyra, but was offered it by my Neuro for fatigue. I didn't try it. Some people have good luck with that drug, but it takes time.