Can Trailwise take my cycle into account?

If you ask it to. Cycle-aware coaching is opt-in and does nothing until you turn it on. Once it is on, log the first day of your period in the daily check-in; basal body temperature is an optional extra on the same form. If a connected source sends cycle data of its own, Trailwise reads that too. From the onsets alone, Trailwise places a calendar estimate of where you are in your cycle, and it stays on "unknown" rather than guessing when the data is thin or out of date. If you log basal temperature, a post-ovulation rise can confirm the luteal phase instead of estimating it. What that changes: in the late-luteal window, part of a temperature rise and part of an HRV dip are attributed to the cycle rather than read as illness or as under-recovery, so Readiness and Sentinel weigh them less heavily. Resting heart rate and breathing rate are left exactly as they are, so a real illness still surfaces, and the reading says when it was adjusted for cycle physiology. Trailwise also uses a maximum heart rate formula derived on a female cohort wherever it knows you are a woman, independently of this setting. If your cycle looks disrupted, a proposed plan is biased toward a lower peak and a gentler ramp; a low ferritin reading does the same on its own, whether or not cycle-aware coaching is on. Setting your life stage under Settings > Your athlete profile, in the boundaries card, is what marks pregnancy, postpartum, or peri and menopause; a peri or menopausal athlete gets more strength work in a proposed plan than the default. Trailwise never tells you what any of this means for your health.