Don't always trust the label; ketone salt supplements may do more harm than good when it comes to athletic performance.

You may have heard of the ketogenic, or "keto," diet, which is based on fat- and protein-loaded foods and intented to eliminate carbohydrates as much as possible.

The keto diet works by causing ketosis, which is a process that relies on burning fat to derive energy, rather than taking the calories from carbohydrates.