The run protocols

The app shows these as a short checklist on purpose. You read it standing on a start line, and a paragraph of reasoning is the wrong thing to hand someone in that moment. The reasoning is here.

No hard exercise for 24 hours.A maximal test measures your ceiling, and residual fatigue lowers it. Testing the day after a hard session reads as a fitness decline that never happened — the most common way a person records a drop they then try to explain.

Warm up for 10–15 minutes.Beyond injury risk, an unwarmed start spends the first minutes of a 12-minute test on physiology a warm-up would already have handled, and those minutes are a measurable part of the distance.

Start controlled, finish hard.The Cooper test rewards even pacing. Going out too fast produces an early slowdown that costs more distance than the fast start gained, which is why first-time testers frequently under-read their own fitness. On the 1.5-mile run the same logic applies to splits.

Walk if you need to, but keep moving. The test is a distance in a fixed time (Cooper) or a time over a fixed distance (1.5-mile). Stopping entirely ends the test; walking is a slower pace, not a failure, and a walked finish is still a valid result.

Why a large meal matters.Digestion diverts blood flow a maximal effort is competing for. Two to three hours is enough for a normal meal; the guidance is about comfort and performance rather than safety.

The stop signals, and why they are absolute

Chest pain, dizziness, lightheadedness, nausea, leg cramps, or breathlessness beyond hard breathing mean stop — not slow down. Hard running is uncomfortable, and the difficulty is telling ordinary maximal-effort discomfort from a symptom. The rule Verve uses is that you should not have to make that judgement: if you meet any of these, the test is over and the result does not matter.

The same symptoms in the hours after a test warrant medical attention. Cardiac events associated with unaccustomed maximal exertion are rare, and are concentrated in people doing an all-out effort they have not trained for — which is precisely what the safety check and the eight-week training window exist to catch before you reach the start line.