I have a friend who had PCS for around 3 months and has made a 'full recovery'. He works in a stressful job, drinks a lot, doing stupid stuff and falling over a lot when he's drunk, and it doesn't seem to bring back his symptoms. Hopefully it'll stay that way though I do worry for him obviously. And yes I do warn him about it.

It gives me hope that I, who have no intention of drinking or falling over, will be able to make a similar 'full recovery'. Whatever else, I'm certain that any concussion makes you more susceptible to future impacts, however good or normal you feel.