Grandparents Marathon & Behavioural Converters

Gaming and workout: incentive makes the sacrifice acceptable (and fun).
It's like flavoured cough syrups for children.

"An incentive is a bullet, a lever, a key: an often tiny object with astonishing power to change a situation" (Levitt & Debner, Freakonomics)

Phisical exercise is vital for the overall wellness of aging people.
Unfortunately videogaming might not be the best of incentives for grandparents...

But probably something linked to their grandchild might: what about a grandchild-grandparent marathon?

02/06/2008 Updated: Here