Mental stress can torpedo your sperm quality. So if baby-making is on your agenda, try a new position to beef it up.

A yoga position, that is. 

According to geneticist Rima Dada, Ph.D., yoga can make your sperm healthier.

Related: The Men’s Health Guide to Erectile Dysfunction—the Only Resource You Need to Stay Hard For Life

Men in her study who did yoga 5 days a week saw a significant reduction in oxidative stress after just 15 days, and DNA damage in their sperm improved after 6 months, increasing their odds of being virile.

(You won’t be the only guy doing sun salutations. Here’s Why Special Ops Are Doing Yoga.)

Still, if she’s unable to conceive even after you’ve given yoga a shot, you should loop in your doctor.

If you’ve been having  unprotected sex for 12 months without conceiving, it’s a good idea for both of you to get checked, said Dr. Darius Paduch, Ph.D., director of sexual health and medicine at Weill Cornell Medical College. (Here are 7 Signs Your Sperm Is Healthy and Strong.)

Your appointment will likely include a thorough physical exam, a sperm sample, and blood tests that check hormone and blood sugar levels.

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Treatment depends on the cause of your infertility—you may be given hormonal meds to stimulate normal sperm production, or undergo surgical treatment if you have conditions like varicoceles.

This article originally appeared on MensHealth.com.