Paragraph 3
Most of the energy the body uses each day is set or fixed.
Assuming an energy input of 2,000 calories, about 1,400 calories, or 70%, goes to essential functions such as keeping the heart and the brain working;
this is called the basal metabolic rate (BMR).
Around 200 calories, or 10%, is used to consume and absorb energy from food and is called the thermic effect of food (TEF).
In short, BMR and TEF are the minimum energy required for the body to stay alive.
The remaining 400 calories, or 20%, is used for things people choose to
do, including various physical activities (PA) like working, playing, and moving around.
do, including various physical activities (PA) like working, playing, and moving around.
Maybe some of the London public transportation workers spent the remaining 20% differently, resulting in their different health outcomes.
Most of the energy the body uses each day is set or fixed.
Most of the energy the body uses each day가 문장의 주어, is가 동사이다.
the body uses each day는 the energy를 수식하는 형용사절로 앞에는 목적격 관계대명사가 생략되었다.
In short, BMR and TEF are the minimum energy required for the body to stay alive.
required for the body to stay alive는 the minimum energy를 수식하는 과거분사구이다.