Humans don’t have a defined mating season like deer or wolves. Here’s how evolution blended biology, culture and social life into year-round intimacy.

Ultrahuman's new Cycle and Ovulation Pro feature for the Ring Air has an unexpected origin story. The algorithm behind it was originally designed for intravaginal fertility monitors, but Ultrahuman ...

Ultrahuman Ring Air users can get paid-for cycle tracking features. Cycle and Ovulation Pro launched on Friday. The tool enables people with irregular menstrual cycles to track their periods ...

Most female mammals experience “heat,” occasional periods when they can get pregnant—and as a result, become eager for sex. But human women don’t go into heat. They can become pregnant and feel ...

Ovulation fatigue and exhaustion can occur during and after ovulation. It’s associated with fluctuations in hormones, including estrogen and progesterone. If you feel tired or exhausted in the weeks ...