Insights
Field notes on active wellness testing — the physiology behind readiness, recovery, and training load, written for athletes and the people who train them.
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Cardiac signals
Reading the heart two ways
ECG and PPG capture different parts of the same heartbeat. Measured together in one window, they expose timing — like pulse transit — that neither signal shows on its own.
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Autonomic
What standing up reveals
The shift from lying to standing is a quick, repeatable window into how the autonomic nervous system handles stress and recovery.
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Breathing
Breathing you can measure
Guided breathing works better when you can see the response. Live signals turn a vague exercise into a measurable one.
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Trends
One test is a number. A hundred is a trend.
A single reading says little. Scored against your own baseline over weeks, the same metrics start to reveal drift, load response, and recovery.
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Balance
Balance as a readiness signal
Postural steadiness and the body’s orthostatic response add a simple daily layer to the readiness picture.
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Method
Active testing vs passive tracking
Most wearables watch you rest. An active, on-demand test asks a specific question and reads the answer in about 60 seconds.
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More writing
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