Author has forgot so many important points or has little knowledge. When you give an example make everything the same. Instead of using running, cycling and walking. The author should use the same. Running for 20 mins at 6miles spead you will be able to burn 200 calories and not 90.Also the author has to take couple more things into consideration. One does not need to run to burn calories for each and everything they eat. Our human body automatically burns calories no matter whatever you do. Like sitting idle will burn 60 calories/hour.sleeping burns 45 calories/hour.eating 1 hour burns 85 calories,driving car 1 hour burns 110 calories. For average Male it burns about 2500 calories a day.One does not have to run for 20 mins after taking idlli & sambar or cycle for 80 mins after eating pav bhaji.Only people who exceeds 2500 calories a day should be careful. For female its 2000 calories a day. Approximately.
