I didn't know females could sumo also...I found that joining a sumo club started my weight gain. You'll have weigh-ins at each session. But unlike with Weight Watchers you score points for gaining weight rather than lose it. We used to compete with each other for the most weight gained. And your coach will give you at least many good tips for gaining. He might even give you a diet sheet like ours did. And let's not forget that these days women and girls do sumo, too. And there's no stuffing a cushion up your shirt, when you're wearing a mawashi.