I'm currently logging food/exercise intake on Fitday. I bought the at home version, but there is a free version at www.fitday.com (Sign up for the free one and you'll get a 10 dollar coupon for the for pay one). This peace sign is the average make up of the last 7 days-no booze-it would ruin the design. The daily make up varies-and I've been shrinking my blue section (carbs) so th next 7 days might not seem so pretty, but the hippie nerd computer geek health nut in me really likes this screen shot.
There is something about putting things in a chart that makes it less threatening-that's probably why we do it for executives all the time.