Hormone Athlete Club
HACk into your hormones.
Unlock your performance.
Why hac?
Train with your biology. Not against it.
Most menstrual cycle-based training tools and apps rely on textbook assumptions that every women has a 28-day, regular cycle. Less than 15% of the population follows this pattern. HAC goes deeper—turning hormonal patterns into performance intelligence so you can optimize every phase.
We combine real hormone data with evidence-based training, nutrition, and recovery protocols to deliver a plan that’s truly yours. No guesswork. No generic calendars. Just science-driven insights personalized to your physiology.
Hormone-Informed
Plans built on your actual hormone levels, not estimates.
Precision Performance
Training, nutrition, and recovery tailored to you.
Science-Backed
Evidence-based protocols grounded in research.
Built for Athletes and Active Women
Designed by and for female athletes and active women who compete.
About Us
Dr. Emily Sauck
DO, MBA — OB/GYN & Former Collegiate Athlete
Emily kept seeing the same gap in her patients and women athletes: elite female athletes still train around their physiology instead of with it—leaving performance, durability, and career longevity on the table.
Why isn’t there a cycle app built for performance, not fertility? One that recognizes less than 15% of women have a “regular” cycle—so training off generalized phases isn’t enough. That’s why she set off to build the tool that has been missing: hac.
FAQ
Quick answers
No. HAC supports every level, from wellness-focused training to high-performance competition.
No. The platform is built to interpret real hormonal patterns, including irregular cycles.
No. HAC complements coaching by providing athlete-specific biological context for better decisions.
Early product updates, launch access, and priority onboarding for founding members.
Join the Founding Waitlist
Precision Performance Starts Here
Get launch updates and early access to hac.
We’ll only use your email for hac launch updates.