Will Smith is delighted with the effects of losing weight for new film I AM LEGEND as his new physique has enhanced his sexual prowess. The Men In Black star, 39, married actress Jada Pinkett in 1997, and has two children with her - Jaden, nine, and Willow, seven. And according to Smith, losing a stone (14 pounds) for his latest film role has helped reignite the passion in the couple's relationship. He says, "There are wonderful elements of being in shape that keep a marriage going, so it's important to me to stay in shape and in good condition. "You know, if you marry a little firecracker, you've gotta stay in shape!"