키가 어떻게 되시나요? 몸무게는요? 요즘 저는 먹는대로 살이 쪄서 살 좀 빼야 될 것 같아요. 많은 사람들이 헬스클럽에 다니는데 저는 돈을 절약할 수 있는 걷기 운동이라든지 달리기 운동을 주로 하려고 해요. 시중에 살 빼는 약들이 많이 나와 있지만 부작용도 클 것 같아서 겁이 나요. 돈도 절약하고 운동 살을 뺄 수 있다면 일석 이조가 아니겠어요?

How tall are you? What is your height?
How much do you weigh? What is your weight?
I should lose weight, because I’ve been putting on too much weight.
Anything I eat sticks to me.
Anything I eat goes straight to my hips (legs, arms, stomach, etc.).
Many people go to a health club or the gym, but I can’t afford it. So I’m going to do jogging or running because   those   things are free. That doesn’t require spending money.
There are many weight loss formulas on the market and being advertised on TV, but I’m scared of the possible side effects. I believe they are not clinically safe. Anyway if   I   could exercise and lose weight without spending any money it would be very advantageous. It would be killing two birds with one stone.

◆영어로 생각하기 (Immerse yourself in English)

Anything I eat sticks to me.
This phrase is implying that he has a slow metabolism, when a person says this, they usually have a slow metabolism and are saying it is a different way by saying “anything I eat sticks to me.”

Anything I eat goes straight to my hips (legs, arms, stomach, etc.).
This is very same as the above phrase, The person is implying that all the weight they gain from eating only appears to be visible in their hips (legs, arms, stomach, etc.).

There are many weight loss formulas on the market and being advertised on TV, but I’m scared of the possible side effects. I believe they are not clinically safe. Anyway if I could exercise and lose weight without spending any money it would be very advantageous. It would be killing two birds with one stone.
This person believes that all the weight loss formulas and pills work but is afraid of taking these weight loss formulas because of the side effects. By saying “it would be killing two birds with one stone”
Simply means that he will be exercising and losing weight without spending money. Also that statement can be said as accomplishing two tasks at once.