By Arielle Tschinkel, May 3, 2022

As for what causes pre-period fatigue, you can blame it on your hormones. Along with other PMS symptoms — all of which can cause or exacerbate that horrendous “simply can’t stay awake” feeling — Kecia Gaither, an OB/GYN and director of perinatal services at NYC Health + Hospitals/Lincoln, notes that it’s all due to the hormonal fluctuations you experience at this point in your menstrual cycle.

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