There is only one way to lose weight without actually removing a body part: consume fewer calories than you expend. Is this statement true or false? Explain, citing a fundamental law of physics. Why is it difficult for many people to lose weight? Many weight-loss gimmicks work. Explain why they work, and why they may not work forever.
What will be an ideal response?
The statement is true, and is a principle of physics known as the first law of thermodynamics. It is difficult for
many people to lose weight because of a variety of factors, such as overeating due to psychological factors,
sedentary lifestyles, and so on. Weight-loss gimmicks work because ultimately they either reduce calories or
increase activity, or both. They may be difficult to maintain because the novelty wears off, people feel deprived of
food, and a multitude of other factors. Answers to this question will vary considerably.
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