Sleep and Energy
Why women lose sleep for reasons that have nothing to do with sleep hygiene, and why fatigue in your 40s has at least five common explanations that look identical from the inside. Includes the differential nobody walks you through: hormones, thyroid, iron, sleep apnea, burnout.
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Waking at 3am in your luteal phase: the progesterone and cortisol handoff
Waking between 2am and 4am in the second half of your cycle is not random. Progesterone's metabolite allopregnanolone enhances GABA, the brain's primary inhibitory neurotransmitter. When progesterone drops…
September 8, 2026 · 6 min read