Have you heard of "hot yoga" classes, where participants practice in a heated room that causes them to sweat profusely? What's so cool about that? One writer tried it herself to find out.

These muffins are very filling!

The whole wheat flour makes for a dense muffin, which I like. You only need to eat one! If you want a lighter muffin try using whole wheat pastry flour, which is more finely ground and available in the bulk bins at larger grocery stores.

• Calories Burned: 6,932,543,912
• Pounds Lost: 9,208,657
• Cups Water Drank: 213,062,887
• SparkAmerica Minutes: 940,486,317