When you think of healthy fats, you can think of peanuts, peanut butter, and peanut oil. That is because at least half of the fat in peanuts is heart-healthy monounsaturated fat, the kind found in olive oil and avocados. And over 30% is polyunsaturated fat; another good fat important in a healthy diet.
At half the distances of a full Ironman -- a 1.2-mile (1.9-kilometer) swim, 56-mile (90-kilometer) bike ride and a 13.1-mile (21-kilometer) run -- the Ironman 70.3 series is the fastest growing triathlon series in the world.
To say covering 140.6 miles by swimming, biking and running takes a lot of energy is an understatement. Racing an Ironman triathlon takes between eight and 17 hours of steady, aerobic work. How many calories you burn depends on your finish time, intensity level, size and efficiency at each of the sports.