Actually I wanted to have a boy so I really believe that this worked for me, twice. Ya ready? Male sperm do swim faster than female sperm, but you can help the male sperm win the race! I don't know any way of writing this in a "lady-like" way...so I'll just cut to the chase and say it as delicately as I can. Position, position, position! You need to have your husband behind you and you need to be on your hands and knees with your husband as deep as possible. After the fireworks have gone off, lay down with pillows up under your hips so that the force of gravity is working with you. Diet also has something to do with it too. Women that eat, 2,200 calories a day before conception increase their chances of having a boy. Also, I used an ovulation predictor kit to check when I was going to ovulate because the closer you time intercourse to the day of ovulation the more likely your chances are of having a boy. One more thing, the vaginal environment needs to be alkaline. (I googled some alkalin foods:ALFALFA(sprouts), almonds, APPLES apricots, artichokes, BANANAS, blackberries, blueberries, BROCCOLI, cabbage, cantaloupe, CARROTS,cherries, COCONUT, CRANBERRIES, cucumbers, DATES, dill, figs (dried), flaxseed, GARLIC, GRAPES, Grapefruit, greenbeans (fresh),LEMONS, lettuce, LIMA BEANS (fresh), mango, MELONS, okra, Olives, olive oil, ONIONS, ORANGES, Peaches, Pears, PINEAPPLE,Pumpkin, Raspberries, Romaine lettuce, Soybeans, Spinach, squash, Strawberries,tangerine, Vegetable oils, water chestnuts, watermelon.) Good luck!