May be a loooong way to go but it won't take as long. Once you get used to exercise-well the brain might but the body may not- you will come on in leaps and bounds. Just don't try a Marathon tomorrow- or next week---------------Maybe the week after.
The back may be recovering but don't forget the rest of the body. Bring that on slowly aswell.
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How long was I in the army? Five foot seven.
Spike Milligan