I should know better but I'm going to go ahead and put my cent and a half in.
You clearly do not have
ALS, per the neurologist that examined you.
You need not worry any further unless or until:
1. you find that getting out of bed in the morning becomes a 5 minute ordeal because the majority of your muscles are as stiff as a 3 day old dead dog frozen in an arctic ice glacier
2. you go to climb a set of stairs and it feels like your legs are encased in concrete
3. you find it harder to speak because your tongue feels like its encased in concrete
4. you find you can no longer open a jar of olives
5. or one of your feet no longer cooperates when you walk (drop foot)
If you would like practical advise on how to practice for an EMG/NCV test, I can advise!