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What is your magic number?

Pumping glossary; plain language, no fluff · Updated July 2026

Quick answer: In EP circles, your magic number is the minimum pumps per day that holds your supply steady, a personal constant set largely by breast storage capacity. Two moms with identical output can have magic numbers of 4 and 7.

In practice

You find it empirically: drop a session, hold everything else steady, and watch a full week of totals. Steady totals mean the number is at or below the new count; a slide means you crossed it, so restore the session. Knowing your number turns schedule planning from superstition into engineering.

Milk First pump timer with two-tap logging

In Milk First

Log any session in two taps, backdate the ones you forgot, and let the 7-day average chart answer supply questions with real numbers. Every pump files its milk into the stash automatically.

Milk First speaks this whole language for you: seshes logged in two taps, every bag on its correct clock.

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