Mother and Baby

This is the best time of day to try for a baby, according to science

couple trying to conceive

Trying to conceive can sometimes be a long and tricky process. For others, it might happen when they least expect it.

Now, a study on male fertility claims to have discovered the ideal time to try for a baby. It turns out early in the morning is apparently the optimum time, especially before 7:30 a.m. 

Just another reason to stay in bed for a bit longer in the morning...

What the research says:

To figure out the best time to try for a baby, researchers at the University Hospital Zurich analysed a total of 12,245 semen samples from 7068 men between the years 1994 and 2015. All the men were between 25 and 40 years old. The study aimed to look at both circadian and circannual rhythms - so basically when your natural body clock aligns with the calendar year.

They analysed the samples in terms of:

  • sperm concentration
  • total sperm count
  • progressive motility (refers to sperm that are swimming in a mostly straight line or large circles)
  • normal morphology (sperm that appears normal when viewed under a microscope)

It turns out, three of these factors (sperm concentration, total sperm count and normal morphology) are at their highest first thing in the morning.

The study also discovered that sperm concentration and total sperm count increased in the spring months of March, April and May and decreased significantly in summer.

The study's lead author, Dr Brigitte Leeners said, “Male semen quality varies with both circadian and circannual rhythms”

“Collection of semen in the early morning, where semen quality was highest, can be used to improve natural fertility.”

So it looks like waking up a bit earlier in those spring months might just increase your chances of getting pregnant. The researchers also hope that their research can be useful for future fertility treatment. However, as with any study, results are likely to vary from person to person and couples trying to conceive should consult with an expert.


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Catriona originally joined the team as an Editorial Assistant to work on the 2019 M&B Awards. As a Digital Writer, she has written and updated hundreds of articles on the site from medical explainers to celebs news and shopping galleries.

Catch her running along the Thames or eating her way around London's restaurants.


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