Endurance athletes and carbohydrates go together like milk and cereal, right? Maybe not anymore. According to some new thinking by sports nutrition experts like Dr. Phil Maffetone, the hallowed carbo-heavy diet might actually cause your performance to decline and your body fat to go up.

Too many carbohydrates can disrupt your hormonal balance, making it harder to burn fat, restricting the flow of oxygen to your muscles, and building love-handles. Such thinking flies in the face of traditional sports medicine, but a small group of experts believes the data back it up conclusively.

Send in your questions now to Phil Maffetone and find out about the performance-boosting new diet that's working old-school nutritionists into a tizzy.

Also see:
"With a Little More Lard?", Outside, February 1996, By Andrew Tilin