you will have seen that the descent was always part of the wave.
Affect and recovery genuinely oscillate — so over weeks, three waves take shape. Star OS doesn't impose a perfect sine; it fits one to what you actually report and what your body actually does: a dominant rhythm, its real amplitude and phase, plus the honest noise and the occasional dip a life has. You watch the crest and the trough come around — and learn that both were always coming.
These are illustrative. Your real waves would be fit to your own data — a cosinor model with its goodness-of-fit shown — never a birthday-driven horoscope.
This is not biorhythm. The 23/28/33-day birthday curve is settled pseudoscience — predictions no better than chance. A cosinor fit is the opposite: a model built from real, repeated readings (morning HRV, daily affect, the spirit self-report), reporting its amplitude, its phase, and how well it actually fits — and always showing you the exact number, because you deserve the figure, not a vibe.
The leaf gathers light by day and integrates by night. Nothing alive lives on the crest alone.
When you can see the trough was always part of the wave, you stop bracing against it — and start walking down the mountain well.