Women who work or lift a lot may struggle to get pregnant

Women who work more than 40 hours a week or routinely lift heavy loads may take longer to get pregnant than women who don’t, a US
 study suggests.
Researchers followed 1,739 nurses who were trying to get pregnant and estimated 16 per cent of them failed to achieve this goal within 12 months, and five per cent still hadn’t conceived after two years.

Working more than 40 hours a week was linked with taking 20 per cent longer to get pregnant compared to women who worked 21 to 40 hours.