Ever since my concussion a month ago (which I sustained from a tackle in a rugby match--hit my head on the ground) I have dreams about playing sports. Like every night I am either running, playing rugby, football or just doing some kind of conditioning. Half the time these dreams contain an element where I hit my head again and think, "Oh my god! I just hit my head." And then I worry for the rest of the dream about sustaining more damage, the cumulative effect of the concussions, etc.