Children at the school do the exercise class at least once a day, some of them twice.

BBC: Obesity rates fall in Philadelphia

Some parents have refused to let overweight kids be taken out of class for more exercise, saying they should focus on studying.

BBC: Taiwan wages nationwide battle with the bulge

Led by a video projected on to a whiteboard nine children, a mix of Latinos and African-Americans, walk or jump on the spot, swing their arms, stretch and reach in an exercise class that lasts around 15 minutes.

BBC: Obesity rates fall in Philadelphia

After joining her local Weight Watchers class and following a simple exercise programme of swimming, walking and gardening, Mrs Whitfield slimmed down a healthy 8st 7lbs - a move she believes has prolonged her life.

BBC: 'Weight loss has prolonged my life'

This is a little naive given that the modern securities class action is mainly an exercise in getting a case past the motion to dismiss and only a handful of cases have every gone before a jury.

FORBES: 'Pro-Business' Supreme Court Defies Critics Again

Committing to someone or a class gives you a fixed time to exercise and you put it on your calendar.

FORBES: How To Reverse The Aging Process

Mr. Zuckerberg currently holds in aggregate approximately 444 million shares of Class B common stock as well as 60 million shares of Class B common stock issuable upon the exercise of an option.

FORBES: Facebook: Zuckerberg Won't Sell For A Year, But Employees Can Get Out Earlier

The exercise was also useful in that the data mining class includes both business students and those from the university's engineering department, among them graduate computing student Rosskyn Dsouza, who gained some new commercial insights.

CNN: Doggedly pursuing a business answer

Then, as an educational exercise, I gathered the data about the upper-middle class city of Golden, Colorado, only to learn that we had almost 450 children who had no food on the weekend.

WHITEHOUSE: Not In My Backyard

Could we do the same thing for health insurance -- take class in cooking, nutrition, stress management, communication, parenting, stopping smoking, maybe even exercise classes -- and get a reduction on our monthly premiums?

WHITEHOUSE: Your Interview with the President

After the offering, assuming exercise of the over-allotment option, the company will have 17, 949, 577 Class A shares out, and 9, 528, 313 Class B shares, for a total of 27, 477, 890 shares.

FORBES: Connect

After the offering, assuming exercise of the over-allotment option, the company will have 18, 049, 126 Class A shares out, and 9, 528, 313 Class B shares, for a total of 27, 588, 439 shares.

FORBES: Zillow Expects To Price 3.46M Shares At $12-$14 A Share