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.
The faster pace you maintain while jogging, the more calories you'll burn over the course of a mile. If you favor a short, uptempo workout and can maintain a pace of 10 mph, you'll need just six minutes to travel a mile. A 135-pound person burns about 110 calories in six minutes of running at 10 mph. A 165-pound person burns about 135 calories during the same run.