Heartbeat - 1 |work|

Around 6-8 weeks after conception, the embryonic heart starts to pump blood through its chambers, and the first detectable heartbeat is recorded. This initial heartbeat is a slow, irregular rhythm that will gradually increase in rate and regularity as the embryo develops.

Research has shown that the characteristics of the fetal heartbeat can have implications for adult heart health. Studies have found that: heartbeat 1

| Action | What ARI Does | |--------|----------------| | Open Heartbeat 1 app | Shows today’s rhythm stability trend line. | | Swipe left | See real-time fatigue index (Low/Moderate/High recovery need). | | Double-tap waveform | ARI plays back last 30 sec of heartbeat as subtle haptic pattern + visual pulse. | | Hold finger on sensor | On-demand 15‑second rhythm snapshot with instant anomaly flag. | | Night mode | Sleep-specific ARI: detects HRV changes that precede waking, light/deep transitions. | Around 6-8 weeks after conception, the embryonic heart