Btw, on the subject of grey matter, here's a little extra information for smokers (borrowed from Wikipedia).
Effects of smoking
Older smokers lose grey matter and cognitive function at a greater rate than non-smokers. Chronic smokers who quit during the study lost fewer brain cells and retained better intellectual function than those who continued to smoke. There you go..
..and now, the quiz -
You Are Methodical
You hold yourself accountable for your actions. In the end, you have to live with yourself.
You ask important questions. You believe a good question is worth more than a good answer.
You think logically and don't show your feelings - even when pressed. You keep your emotions under wraps.
You are a fact-finder. You are concert with what's real and actual.
Your turn, take