Your chances of success with IVF depend largely on your age and your history – two things you unfortunately cannot change. However, leading a healthy lifestyle will put your body in optimum shape for conception and pregnancy. A balanced diet and regular exercise are important for both of you. Your BMI should be between 20 and 25. If you are overweight, a combined approach of diet and exercise is the safest and healthiest way to lose weight, and can significantly boost your fertility. For IVF treatment, both partners should stop smoking and drinking, and limit your caffeine intake. Recreational drugs and anabolic steroids are a big no.