A stupendous graph, part of an equally impressive health/lifestyle piece in the WSJ yesterday:
"No pill or nutritional supplement has the power of near-daily moderate activity in lowering the number of sick days people take," says David Nieman, director of Appalachian State University's Human Performance Lab in Kannapolis, N.C. Dr. Nieman has conducted several randomized controlled studies showing that people who walked briskly for 45 minutes, five days a week over 12 to 15 weeks had fewer and less severe upper respiratory tract infections, such as colds and flu. These subjects reduced their number of sick days 25% to 50% compared with sedentary control subjects, he says.
But this does offer the critically-minded a whole new "scientific" way to judge people.
Are they high, medium, or low fitness?
Appears from the above that you can tell at a glance...