1. Avoid fast food. A study published by the Brazilian Federation of Gynecology and Obstetrics Association showed that trans-fat intake was associated with lower fertility. This doesn’t only apply to women but men as well. Men should also follow a healthy diet since some nutrients are essential for the health of the sperm, such as omega-3, vitamin E, vitamin C, β-carotene, selenium, zinc, vitamin D, and folate."
2. There should be moderation of alcohol and caffeine consumption. Avoidance of tobacco completely since it can also produce fertility issues. Therefore, women trying to get pregnant should avoid drinking more than two drinks a day (10g of alcohol). In addition (more than 5 cups of coffee per day) have also been associated with decreased fertility.
3. A third suggestive factor would include regular sexual intercourse. A 2017 study revealed that couples who had sex every other day had a better chance at conceiving than those who had sex just once a week. The inclusion of tracking the ovulation cycle would aid in synergistic information for couples. When vaginal secretion is slippery and clear the probability of conception is highest.
Ref:
https://www.healthline.com/nutrition/16-fertility-tips-to-get-pregnant#11.-Take-time-to-relax 
