This is a subject that I have gotten very vague advice from my doctors about. Basically what I hear is “take it easy”… “if you’re tired the next day you’re overdoing it”… etc. I’ve kind of done my own thing as a result of this, and here is what I did: I immediately quit running (I ran three times a week, 3 to 4 miles) when I started getting drop foot, I did keep lifting, but I think I made my drop foot worse by lifting, so I quit lifting too. I am still swimming. I’ve swam my entire life, and in the last three years (diagnosed almost 4 years ago) I pretty much swim three or four times a week going around 3,000 yards/meters per workout. Despite all this, I continually get weaker. Now I go around 2,000 yards/meters. In the beginning weakness was totally in the legs, I first lost my kick, and then I lost the strength to push off walls that well, but in the past four months my arms and shoulders are seeing significant weakness. I have to admit though: I DO FEEL BETTER AFTER I swim. More limber. Lot’s more to point out about this. So if anyone wants my opinion hit me up.