Definition of organism for English Language Learners. : 1  an individual living thing. : 2  a system with many parts that depend on each other and work together.
Figuring out how many calories you burn when running is, on a simple level, a fairly straightforward calculation. Most experts (and lots of studies) suggest that a person of average weight burns about 100 calories in a mile of running.
You will see with the calories burned walking calculator above: Someone weighing 150 pounds walking a normal pace for 60 minutes would burn 250 calories, whereas someone weighing 200 pounds walking for the same duration and speed would burn 333 calories. The average person will burn between 80 to 140 calories per mile.