"It's the most incredible thing," says Kate Hudson of being Mom to son Ryder Russell, born on Jan. 7, 2004. "But nobody ever tells you how hard it's gonna be." Luckily, dropping the 60 lbs. she gained during her pregnancy wasn't nearly as difficult. "I did lose the weight pretty fast," says the Skeleton Key actress (in Malibu on July 4). Her secret? Three-hour daily workouts and a 1,500-calorie-a-day diet.