
Your luteal phase is not
a personality flaw.
It is a cortisol surge.
And there is a way through.
Take the free 2-minute quiz to discover your surge type — then get your free personalised luteal-phase guide, built for exactly how your nervous system reacts.
Find your surge type → get your free guide → then explore your personalised Survival Kit.
What happens during your luteal phase
The luteal phase is days 15–28 of the menstrual cycle — after ovulation, before your period.
Progesterone drops. Cortisol spikes. The amygdala activates. Your nervous system enters threat mode, causing anxiety, overwhelm and tension.
This is not a character flaw. It is biology — and it can be regulated.

14
days your system needs you most
1 in 3
women report severe luteal symptoms
100%
science-backed, somatic, drug-free
How Selyse works with you
Dissolve your inner surge.
Stories from the luteal phase
The two weeks before a period can feel like becoming a different person. These are the kinds of experiences women describe — and what changes once they understand the science.
Swipe to read more →
These stories represent experiences shared by many women and are illustrative of the luteal phase journey Selyse is designed to support.
Who this is for
Selyse is for any cycling woman — aged 13 to perimenopause — who has ever felt like a different person in the two weeks before her period.
Whether you rage, cry, withdraw, or spiral into anxiety, Selyse meets you where your nervous system is.
"You are not broken. Your biology is just doing what it was designed to do. You need the right tools."
Be first to know when the Selyse somatic tool launches.
Join the waitlist and be the first to access science-backed tools designed specifically for your luteal phase.
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