Which of the following is NOT a recommended behavioral modification to improve fertility?

Increased alcohol consumption is not a recommended behavioral modification to improve fertility. Research has shown that excessive alcohol intake can negatively impact fertility in both men and women. It can lead to hormonal imbalances, decrease sperm quality in men, and disrupt ovulation in women, making it more difficult to conceive.

On the other hand, smoking cessation, weight loss (if applicable), and moderate physical activity are all beneficial for fertility. Smoking has been associated with reduced fertility rates and can lead to various reproductive health issues. Weight loss can be important for individuals who are overweight or obese, as it can improve hormonal profiles and ovulatory function. Moderate physical activity supports overall health, enhances fertility, and also helps maintain a healthy weight. Therefore, all these recommended modifications align with improving reproductive health, while increased alcohol consumption does the opposite.