Stress Monitor
See stress
before you
feel it.
Your autonomic nervous system reveals how stressed you really are — even when you can't consciously feel it. i bio tracks physiological stress 24/7 and tells you what's driving it.
Stress Level · Now
32 / 100
Low
Today's Stress Curve
The Science
Your autonomic
nervous system.
The autonomic nervous system (ANS) controls your fight-or-flight and rest-and-digest responses. When under stress — physical or psychological — your ANS shifts toward sympathetic dominance, which shows up in HRV, heart rate patterns, and skin conductance.
i bio reads these signals continuously and scores your physiological stress state in real time — before you've consciously registered that you're stressed.
Weekly Stress Average
Stress Triggers
See what's causing it.
Training load
Physical strain elevates physiological stress. i bio distinguishes exercise-induced stress from psychological stress.
Poor sleep
Sleep debt is one of the strongest drivers of elevated physiological stress. You'll see it in your morning stress score.
Nutritional stress
Caffeine, alcohol, large meals — all show up in your stress data. Correlate habits to stress spikes with the journal.
Psychological pressure
Deadlines, conflict, and anxiety show up as physiological stress even without physical activity.
Environmental stress
Heat, altitude, illness, and travel all affect your ANS balance and contribute to your stress score.
Recovery correlation
High stress → lower recovery. i bio shows you exactly how your stress yesterday impacts your readiness today.