The Cycle Syncing Library
Learn how to sync your workouts and lifestyle with your real hormonal fluctuations.
The Ultimate Guide: Why You Need a Cycle-Synced Workout App
Discover how to stop training linearly and start adapting your routines to your hormonal fluctuations to maximize results, prevent injuries, and understand your body like never before.
Latest Articles
The Ultimate Guide to the Symptothermal Method: Science, Practice, and Wearables
Discover what the symptothermal method is, what the latest evidence (2023+) says about its efficacy, and how wearables and AI (like Siena) are redefining your training.
Training and the Menstrual Cycle: Physiology of the 4 Phases and How to Identify Them
Discover the real science on how the 4 phases of your menstrual cycle affect your physiology. Learn to identify them and adapt your training using biomarkers.
Cycle Syncing with an Irregular Period: A Practical Guide
Can you train with your cycle if your cycle isn't predictable? A guide to cycle-based training for women with irregular periods, hypothalamic amenorrhea, PCOS, and unpredictable cycles, built on current evidence.
Should I Work Out on My Period? What the Science Actually Says
Should you skip training when you have your period? Here's what the evidence from over 1,000 athletes says, and why the answer is more nuanced than a simple yes or no.
Why Training the Same Every Week Makes No Sense for Women
Most workout programs are designed for a 24-hour hormonal cycle. Women have a multi-week cycle with individual variation that changes everything. Here's what the science says, and what to do instead.
What Is Cycle Syncing? The Science of Training With Your Hormones
Cycle syncing is the practice of adapting your workouts, nutrition, and recovery to your hormonal cycle. Here's what the science says and how to actually do it.
Cycle Syncing Workouts: The Complete Guide to Training With Your Cycle
Learn what cycle syncing workouts really means, why your energy fluctuates, and how to adapt your training to your menstrual phases.