Digestive System and the calories it burns

How many calories do you naturally burn in a day?

That calorie blaze might resemble a five-alarm fire at certain times of the day, like when you're exercising, but the flame is always lit. Over the course of a day, your body's natural calorie burn without any activity can range from 1,300 to more than 2,000, depending on your age, sex, and the amount of skeletal muscle to fat ratio.

How many calories do you burn digesting different foods?

Protein takes the most energy to digest (20-30% of total calories in protein eaten go to digesting it). Next is carbohydrates (5-10%) and then fats (0-3%). Thus, if you eat 100 calories from protein, your body uses 20-30 of those calories to digest and absorb the protein. You'd be left with a net 70-80 calories.

If you consume 2,000 calories over the course of the day, about 10 percent, or about 200 calories, will be expended on digesting, absorbing, metabolizing and eliminating that food.

How much weight will I gain if I eat 5000 calories a day?

In the studies you learned about in the previous paragraphs people gained around 0.2 pounds of fat per 1,000 calories they ate above their maintenance needs. If you ate five times that amount—5,000 calories more than you need to maintain your weight—you could expect to gain about a pound of fat.

Consuming at least 1,200 calories per day has often been touted as the minimum for basic bodily functions and to stay out of starvation mode, but the amount is actually too low. A healthy amount of calories for adult women ranges from 1,800 to 2,400 calories per day and for men it's 2,000 to 3,200 calories per day.

Worst Foods for Digestion

Fried Foods

Citrus Fruits

Artificial Sugar.

Too Much Fiber.

Beans

Cabbage and Its Cousins.

Fructose

Spicy Foods

Dairy

Peppermint

Corn