Chapter 25, Page 13

Maximizing Chances for Success

Avoid all medications. If you are taking other prescription medications check with your doctor prior to beginning your treatment cycle.
No smoking or alcohol use. Studies show both can result in lower pregnancy rates and a greater risk of miscarriage. Why put yourself through this if you are not doing everything YOU can to insure your success.
No more than two caffeinated beverages per day.
Avoid change in diet or weight loss or fad diets during IVF cycle. A healthy well balanced diet works best.
Refrain from intercourse three to four days prior to egg retrieval and following embryo replacement until the pregnancy test has been done.
Normal exercise may continue unless enlargement of your ovaries produces discomfort.
Avoid hot tubs or saunas.

Fever greater than 100.4o one to two months prior to IVF treatment may adversely affect sperm quality. Be sure to let your doctor know. If you are sick, please take your temperature and report any febrile illnesses.
Sitting in hot tubs and saunas is not recommended. Even a single episode in a hot tub can adversely affect sperm function. Please refrain from this for at least three months prior to treatment.
Drugs, alcohol, and cigarette smoking should be avoided for three months prior to treatment and at all times during the ongoing IVF treatment cycle to get the best results.

Abstain from intercourse for at least three days, but not more than seven days prior to collection of semen for egg collection and during treatment.

Credits: How to Have a Baby: Overcoming Infertility