Squats and ab workouts. Snowboarding can be tough on your knees and like another user said you are going to fall a lot. It's ok it doesn't hurt, but your feet are strapped onto a board so you have limited mobility to get up. If you fall on your ass push up with your hands and then kick up with your feet (body dips might be another good exercise), and if you fall on your face tuck in your knees and do a pushup to get back to crouching then stand. Fear is your biggest enemy here. Remember that snowboarding is fairly simple but your mind will make you tense up and suck at it. Just point your face where you want to go and you will go there. I wouldn't worry about carving (transfering from the heel side of your board to the toe side) just yet. Get comfortable with how your legs feel especially your calves. Oh and get a helmet. Definitely get a helmet. And like any other sport; when you fall brace with your forearms and not your wrists or they will get very fucked up. Snowboarding is not an exclusively masculine activity. That's just stupid to think that. Most dudes I knew who board thought girls who board are very attractive and interesting to be around.