Original
In my situation - I got Guillain-Barre Syndrome while on a overseas trip, the normal procedures they had in the country I visited was that you stayed at the emergency hospital tills you were out of the worst part and then they move you to rehab facility. In my case, they kept me in the emergency tills I was clear to fly home.
To get clear to fly home, I did a lot of work outs in the hospital swimming pool, regular movement exercises in the pool, I felt that I improved dramatically over the week I did them tills I flew home.
While home, i went to rehab and did basic strength training with weights for weeks tills I was strong enough to take up running and cycling. I found especially cycling helping me further in improving my health.