Recovery Trajectory

Recovery Trajectory is a Sleepgenic interpretive framework for reading how sleep and recovery signals change across multiple nights surrounding a defined exposure. The intended sequence is a pre-exposure reference night, the first sleep response after the exposure, and a later recovery night—often described as Pre, Post, and Day-2. The framework can examine Overall and Recovery Scores, HRV, resting heart rate, Sleep Stress, sleep duration, stage percentages, oxygenation, and continuity. It does not assume a required shape. The first post-exposure night may improve, deteriorate, or remain mixed; the later night may normalize, overshoot, remain suppressed, or be obscured by a new stimulus. Canonical v1 provides the nightly calendar spine, previous-day date semantics, rolling 28-day baselines, and explicit missingness needed to align such sequences. It does not yet compute Recovery Trajectory as a formal standalone field. A defensible trajectory analysis also requires the pending TrailGenic training-dose, altitude, travel, and location joins so that the exposure itself is defined rather than inferred from a modality label. Recovery Trajectory is therefore a structured question applied to multi-night evidence—not a Garmin metric, a diagnosis, or proof that a particular adaptation occurred.