But, he said, in most of the five Tuesday evening marathons to date, Fox's audience has not diminished throughout the evening, even, as in the South Carolina primary, when the end result was evident even before the polls closed.
It suggests the optimum amount of sporting activity and exercise young people should be taking is 14 hours a week, which is still an awful lot for most people to envisage, even marathon anoraks such as myself.
That's not easy in a culture that may give family lip service, but in reality places very little economic value on the work that goes into raising children, and where some employers may be even less likely to accept a flexible schedule for family needs than for career reasons or even marathon training.
Even Marathon winner Bill Rodgers later asked me, "What kind of marathon is it that makes you run up a flight of stairs?" Well-known New York City running pioneer and coach Bob Glover insisted to me, "No way in hell we didn't run up those stairs".
Even marathon runners and long-distance cyclists have their limits, and a new study may explain why.
She is still running, even marathons.
But even marathons began to end too soon.
In fact, in observance of the long weekend, the network will be providing four such morning-to-evening marathons, from tomorrow through July 4.
For most impresarios a single production of this four-evening marathon is the crowning achievement of a career.
The London Symphony Orchestra's three-soloist, five-work, single-evening marathon has made me wonder about the other stamina-testing and virtuosity-pushing live box-sets we could dream up and put on at the Royal Albert Hall.
A modest proposal for change is followed by threats from the French and others to veto even that; marathon talks are held that last days, nights and even weeks; and then a much-hyped "breakthrough" waters down the original proposal but is lauded on all sides as a truly radical reform.
