How many calories are burnt to lose 100 grams?

Answer 1

This is a question with variable answers, however I'll assume your talking about burning fat rather than muscle. In one kilogram of fat (or 1000 grams) there is approximately 37,000 kilojoules of energy, or 8837 Calories. So by dividing this by ten, there is 3700 kilojoules (884 Calories) of energy. Thats quite a lot.

When loosing weight as part of a reconfiguration towards a healthier lifestyle, you want to loose fat instead of muscle, so its important to do weight training as well as cardiovascular or aerobic based exercise.

Your body's weight however is bound to fluctuate. You can easily loose 100 grams by going to the bathroom and excreting, through sweat loss while exercise, and you will weigh more directly after a main meal like dinner than you will three hours post meal. Its very normal for the bodily weight to increase and decrease by this much throughout the day.

Answer 2

You have to burn about 3500 calories to lose 1 pound of fat so 100 calories works out to 0.02857 pounds or about half an ounce.