On average, a 155-pound person burns 42 calories while sitting for 30 minutes, according to Harvard Medical School. The number of calories burned varies based on weight and activities conducted while sitting.
An average 150-pound person burns approximately 0.20 calories per regular sit-up. According to FitClick, an average person burns 6 calories per minute of regular sit-ups, and Top End Sports says the average reasonably fit person can complete roughly 30 sit-ups per minute.
According to All About Abs, doing 100 sit-ups burns 10-15 calories. This estimation considers a 150 pound person performing 30 sit-ups per minute for just over 3 minutes. Increasing the intensity and speed of the sit-ups to 100 in 2 minutes results in the same calorie burn in less time.
According to Diet Health Club, the average person can burn 100 calories in about 1,000 regular sit-ups. That number can be increased by doing high-intensity sit-ups: However, Diet Health Club states that it is impossible to burn more than 270 calories in any half-hour session of sit-ups.
A person burns roughly 50 percent more calories standing than sitting, reports KVAL.com. An average person burns 107 calories per hour sitting. Results vary by size and metabolism, but a 155-pound person burns about 50 calories more per hour when standing.
A person doing 200 sit-ups or abdominal crunches burns 20 calories. The base value is one calorie per 10 crunches for a person weighing 150 pounds. Individuals weighing more may lose more calories.
A 150-pound person standing motionless for eight hours burns around 700 calories. In comparison, the same person sitting motionless for eight hours burns 544 calories. It is possible that standing burns more calories because people tend to move around while standing.
The formula to determine the total number of calories burned by mile is 0.75 times the runner's weight in pounds, so a 150-pound runner would typically burn 112.5 calories per mile. The speed at which the runner runs is also a factor.
According to Diet & Fitness Today, the average male burns 155 calories in one hour simply by sitting at his desk and typing. The average female burns 133 calories per hour.
The amount of calories needed to keep a body functioning varies widely from person to person. According to Fitness Blender, a 5-foot-tall, 35 year-old-woman weighing 130 pounds needs 1,338 calories, while a 20-year-old, 6-foot-tall man weighing 180 pounds needs 1,966.