Americans spend billions each year on food, supplements—and trainers. My approach saves you money. Here are actual weekly costs of three starkly different approaches to fitness:

• Traditional training. Traditional trainer-recommended lower-fat, higher-protein foods, more supplements, and five $50 traditional fitness training sessions a week. Weekly cost: $428.

• Doing nothing. Traditional American food, the current heavily advertised supplement of the moment, Relacore (yet another supplement that doesn't work), and no fitness training. Weekly cost: $109.

• My approach. Better food choices, research-recommended supplements, and self-guided fitness training, aided by my book, training sessions with me once every two months. Weekly cost: $74.

Claim based on actual charge data, which you can see in further detail here.

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