What causes weight gain?

What kind of reductions are needed in energy intake before we start to see weight loss in people? If you then want to maintain your new weight you need to reduce calories to ____.

What happens when we diet? Explain some reasons for this.

What happens to weight as we exercise? Explain why this happens.

Explain why exercise is a better form of weight loss despite us not losing as much weight as with dieting.

Give a problem with exercising at high intensities as a method of losing weight.

What happens to weight as we age? What age does weight peak?