If I may make a suggestion? Ask for Physical Therapy(PT). PT can help leg weakness, strength and endurance.

When I was diagnosed one of my many symptoms was bilateral leg weakness.

My Neurologist told me the best thing I could do is Walk. Although my walking ability was severely compromised at this point. I started out taking multiple walks around the house and slowly built up to walking halfway up my driveway and back; to the whole length of the driveway and back. After a several weeks of this I was able to test my limits beyond my property.

nemsmom, it took a year to fully regain my mobility to what is my now my "limit" of 2 miles.

Since then I have always exercised and truly believe had I not listened to my Neurologist I would have been in a wheelchair very early on. I have also been in PT a few different times with positive results.