Good news for all you night owls: While some studies claim that a man's sperm count is higher in the morning, the differences are so minimal, I don't think it matters much in terms of getting pregnant. Say your mate's sperm count goes from 87 million in the evening to 88 million in the morning. This may sound like a lot, but it doesn't change much in the real world. After all, it only takes one little swimmer to do the job.

If you really want to swing the odds of getting pregnant in your favor, you're better off focusing on timing sex close to ovulation.
For women with a typical 28-day cycle, the fertile period is from around day 10 to around day 17 of the cycle. Having sex twice during this period of time should be enough for fertile couples to conceive. (Editor's note: Our ovulation calculator will do the menstrual math for you and give you an idea of when you'll be ovulating.)

And while it's important to be familiar with your cycle, it's equally important to try to relax and enjoy sex. The more relaxed you are, the better your chances of conceiving. In fact, studies have shown that couples tend to feel like having sex during the women's most fertile times. So have sex whenever the mood strikes you — day or night.


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