My HormonologyWhich week are you on in your cycle?

Week 1
First day of period to Day 7
Today’s hormone-cast: Here’s the conundrum for today: You’ve got more energy and stamina thanks to rising estrogen and testosterone. But, you’re also in the mood for fun. So, you may end up spending all that pep on projects that don’t really matter—like digging up dirt on exes, hunting down a new hair salon or driving around town looking for the matching knob for your dresser drawer—rather than applying it to work and knocking more items off your to-do list.

Week 2
Day 8 to Day 13
Today’s hormone-cast: It’s easier to emotionally distance yourself from people, issues and events. Others may see you as a bit cold as you refuse to be pulled into another office melodrama, ignore a woe-is-me email from an elementary school classmate you hadn’t heard from since you were 8, choose not to soothe a regretful employee who messed up or brusquely walk away from negotiations without giving an inch. Truth is, high testosterone is making you feel more independent and less concerned with how people view you, so you don’t feel the need to coddle others. Truth is, high testosterone is making you feel more independent and inclined to think people should pick themselves up by their bootstraps, so you don’t feel the need to coddle them.

Week 3
Day 14 (or ovulation) to Day 22
Today’s hormone-cast: Week 3 is a mini-rollercoaster. During the first half, you may feel weepy, blue, irritable and achey as estrogen and testosterone plunge, triggering a “pre-PMS” phase. But, by the second half of this week, as estrogen, testosterone and progesterone all rise together, you’ll likely be feeling mellow, calm, centered and serene.

Week 4
Day 23 to the end of cycle
Today’s hormone-cast: As estrogen and testosterone plunge, they bring down confidence-boosting serotonin. As a result, you may feel twinges of regret over decisions from long ago—for instance, not going to college or spending too much time with the wrong partner—or over choices you’ve just made—such as buying a new living room chair or turning down a job offer because you weren’t sure it was the right one.