The students who retain the most aren't the ones with heroic Sunday sessions — they're the ones with a boring five-minute habit that never misses a day. That's not motivational fluff, it's the math of spacing: retrieval consolidates memory each time it happens, and five touches across a week beat one long touch at the end of it. Massed practice feels thorough; distributed practice is what actually lasts (Cepeda et al., 2006).

Why small-and-daily beats long-and-weekly

A weekly three-hour review feels virtuous and loses to five minutes a day on the only metric that matters: retention. Two reasons.

First, mechanism: memory strengthens when you retrieve, not when you re-encounter. A reread is re-encountering; a recall is retrieving. The weekly session spends most of its bulk on the weaker activity. Second, spacing: five recalls spread across days each get a fresh attempt on partially-faded material — that slight struggle is the desirable difficulty that makes each rep worth more. Sunday's bulk session retrieves once, on material that's either too fresh (no struggle, low value) or too faded (full relearn, frustrating).

The protocol

The habit only survives if it's smaller than your resistance. Five minutes is the size that gets done on bad days — which is the entire point.

The daily habit also collapses nicely when the prompt source is automatic. In a LearnX Exam Sprint, missed questions come back on their own spaced schedule — your five minutes is answering what the Agent re-serves, not deciding what to review.