This is from Hal Higdon's book
Master Running (Rodale Press, 2005, p. 61)
Fitness Category |
Exercise Calories Burned |
Miles per Week |
Risk Factor |
Extra Years Life |
|---|
Unfit |
0 |
0 |
1.0 |
0 |
Somewhat Fit |
500 |
5 |
0.80 |
2 |
More Fit |
1000 |
00 |
0.50 |
6 |
Still More Fit |
2000 |
20 |
0.350 |
8 |
Superfit |
3500 |
35 |
0.25 |
9 |
"The . . . chart is based not on the work or words of any one scientist, but rather on coversations with many of them. In five categories, it suggest how many calories a week you need to burn through exercise which could include running, to lower your risk factor of dying young and thus extending the length of your life." (Higdon p.61)
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