That change in the regulation of your hormones is one of the reasons you might be struggling to sleep, according to Romper.

If you’re someone who tracks your cycle and is aware of differences in your emotional and physical needs throughout the month, you might have noticed some particular changes. Maybe your weight or skin or mood fluctuates, or maybe you’re more energetic at a certain time during your cycle. Many women swear they sleep differently throughout various points of their cycle and wonder why that is. Does ovulation make you sleepy? Where is all this fatigue coming from?

“No, ovulation doesn’t make you feel sleepy,” Dr. Lakeisha Richardson, OB-GYN, tells Romper simply. Most of the scientific evidence and research surrounds insomnia during your premenstrual time, which, incidentally, begins right after ovulation. At this point, your progesterone levels are rising, and you’ll have drops in your melatonin and cortisol levels.