Which phrase in the passage is a prepositional phrase?
burning calories
we all need to burn off calories to maintain a healthy body weight for our size and age. you use some calories simply without thinking about it in your day-to-day activities. how active do you have to be beyond that? there is no simple answer. the important thing to remember is that many people need to become more active than they are now, and you might be one of them.
each person uses different amounts of calories doing the same type of activity. in general, heavier people use more calories. those who weigh less use fewer. women also probably use fewer.