If I smoke weed all day today will it affect me?

alot of people will say weeds harmless. but in my humble opinion it isnt. it can become a habitual, and other things in life, important things, get lost in the "haze". your brain needs to be focused on your priorities and that big test to cram for, it cant do that if its steadily losing its cells. you cannot replace them. you dont want to become foggy headed. you are blessed with youth and a chance for a good career ahead of you, many of us do not have. grab it, dont lose it.