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Turning up the heat

Do it right
Adding spices (like cayenne pepper) to food makes you sweat, which may also boost your metabolism and suppress your appetite for certain foods. But these effects may not be significant enough to cause substantial weight loss.

"In the scheme of things, you could add [spices] to foods, but implementing that one little thing won't help you get there," says Shapiro. In other words, if you like spice, go for it. If you don't, it's not worth burning your tongue to lose a few extra calories.

Next: Cutting carbs