I sit all day but I have a fast metabolism. I take vit. C everyday. I stop exercising bcause I have mild hemmorhoids. What will happn?

Keep going. If you cut exercise, likely your metabolism will slow down. Weight gain can worsen your hemmorhoids. Best treatment for hemorrhoids is to stay active, keep stools soft, good amount of dietary fiber and no straining or lifting. When going to the bathroom, do not linger on the toilet. Get in, get the job done and then get out. Try to take breaks from daily routine and get up and walk around.