How Does Pace Decide When to Alert Me

Pace uses a priority-based system to decide what's worth telling you about. Not every metric gets equal weight — Pace focuses on changes that could affect your health.

What triggers an alert:

• A vital sign moves significantly outside your personal baseline (e.g., HRV drops well below your normal range)
• Multiple vitals shift at the same time (which can indicate your body is fighting something)
• A reading crosses a clinical threshold (e.g., blood pressure above AHA guidelines, blood oxygen below 95%)
• A mobility metric declines below research-backed thresholds (e.g., walking speed below 0.8 m/s)
• A heart health event is detected (e.g., irregular heart rhythm, high or low heart rate events)
• A fall is detected by your Apple Watch
• Apple flags a walking steadiness alert
• A low cardio fitness event is detected

What Pace stays quiet about:

• Normal day-to-day variation within your baseline
• Metrics that are within healthy ranges
• Temporary changes explained by recent exercise

Pace is designed to minimize noise. If everything looks good, your daily summary will simply tell you that.