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Your hardest day this week was probably not a workout

Load counts everything — the stairs, the standing, the hospital shift. That is why it so often surprises people.

Tafadzwa Moyo · 30 June 2026 · 5 min read

A woman with locs standing in a gym between sets.

A nurse finishing a twelve-hour shift at Parirenyatwa has done more physiological work than most people's evening run. No app asked her to log it. Kairo counts it anyway.

What Load measures

Load is a whole-day figure built from how long your heart spent in each of your personal effort zones, weighted so that time high up costs far more than time low down. Because the zones are yours, the same 45-minute walk can be a modest Load for one member and a significant one for another.

Load 63 — an ordinary Tuesday, 8% above your 14-day norm.

The number that matters is the comparison

A Load of 63 tells you almost nothing on its own. Against your own 14-day norm it tells you a great deal: whether this week is quietly heavier than it feels, whether a taper is actually happening, whether the deload you scheduled survived contact with real life.

Reading Load with Readiness

The pair is the point. High Load with holding Readiness means you are absorbing the work — keep going. High Load with falling Readiness across three or four days is the classic overreaching signature, and the fix is boring: an easier day, an earlier night.

None of this requires you to log a single session. If you moved, it counted.

Tafadzwa Moyo

Head of Coaching Science

MSc Exercise Physiology

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Training load vs daily load — what Kairo actually counts | Kairo Journal | Kairo