This is flawed science used to justify another intrusive tax. Ask any hockey parent if they have obese children. It's unlikely, because the children are at the rink at least four times a week. 

The author neglects to consider the impact of regular exercise. Visit many schools, and the educators are delighted to show you their latest computer labs. A closer review shows little or no extra-curriculars. The neglect and indifference cause students to think physical education is a waste of time.  Existing education tax dollars should be wisely redeployed to focus on exercise and proper sugar consumption. Stop this tax madness.