Madonna - "Super" Woman?

Fitness fanatic Madonna once again makes the daily pilgrimage to her private London gym for a workout, continuing her quest to be the most buff female musician on the planet. She's already the richest - a new Forbes.com story says that she earned $72 million from June of 2006 to June of 2007, making her the wealthiest female musician - over powerhouses Barbra Streisand and Celine Dion. What's next for the Material Girl? Rumor has it that she's performing at the Super Bowl half-time show. She's so fit, she could probably play in the game!