I was playing around with the mileages that I posted yesterday from my 2005 races.
Estimating caloric expenditure for various forms of exercise is making ballpark guesses at best for any individual of a given body weight, but I'd estimate that I probably burn something on the order of:
- Swimming: 700 kcal/mile
- Cycling: 50 kcal/mile
- Running: 150 kcal/mile
Adding up all the calories burned in my various events of 2005 (not counting training at all), that totals the caloric equivalent of roughly 11 pounds of body weight.
So (given the fact that I only weigh about 4 pounds less than I started the year), all those events saved me from gaining an additional 7 pounds this year. (In addition to the other good things those events do for me).
As long as it's moving in the right direction, slow and steady does it! It sure beats the alternative!