A class studio gets a signal every day: someone booked, someone did not, a spot went unused. A gym gets almost nothing. An access membership bills on the first of the month whether the member came fifteen times or never, no class fills or empties, and the only trace a member leaves is a check-in — or the absence of one. That makes an independent gym the quietest business in fitness, and it is why gym owners are so often surprised by a cancellation wave that, in hindsight, had been visible on the check-in log for four months.
Here are the numbers that turn the check-in log into a business you can see, and the one honest decision they force.
1. The distribution, not the average
"Our members average two visits a week" is the most common sentence a gym owner says and the least useful. The average is a blend of two different businesses: a third of the members who come four times a week and are the gym's identity, and a fifth who have not badged in this month and are next spring's churn. Put the members in bands and look at the shape.
Three of the bands matter for different reasons. The zero band is the churn you will see in six months; every one of those members cancels the first time she looks at her statement and asks what it is for. The about-once band is the one a nudge can move — a member at one visit a week is still a member in her own mind, and a specific invitation to a second visit sticks. The four-plus band is the gym's identity and its referral engine, and it is worth knowing who they are by name. Track the shape monthly, against your own previous months, and watch which way the zero band moves.
2. Sleeping members, and the honest decision
Here is the decision the distribution forces, and most gyms avoid it for years. A member who pays and never comes is the most profitable member on the books this month, and the business model of a great many gyms rests, quietly, on her. It is also the most fragile revenue in the building. A sleeping member has not decided to stay; she has decided not to think about it, and the first bank statement she reads carefully, the first January resolution that involves a different gym, the first month money gets tight, she cancels — and she cancels in a cluster, because the same things happen to everyone at once.
The alternative is to reach out to the zero band every month with a specific, low-effort way back in: a named class, a thirty-minute floor session with a coach, "Tuesdays at 7 are quiet, come then". Count the reactivations. It costs a little dues revenue in the short run — some sleepers, reminded, will cancel — and it turns the rest back into members who stay for years. There is no third option; not deciding is choosing the first one.
3. Retention by join month — the 90-day cliff
A gym's retention is decided in a member's first three months, and a January cohort behaves nothing like a June one. Count it by cohort: of the members who joined in a given month, what share is still active and still checking in at one, three, six and twelve months? The curve is steep for the first three months and nearly flat after six, and the work that holds it up happens in the first ninety days — a floor orientation that actually happens, a second visit inside the first week, a name at the desk. The retention piece works through the same cliff in a studio; the shape is identical in a gym, only quieter.
4. Net movement, with holds in their own column
The member count on the first of the month hides the churn inside it. Report the movement: joins, cancellations, holds taken, holds returned, and the net. Holds get their own column because a hold is a cancellation that has not admitted it yet — a member who is already fading and does not want to say so. A gym with steady cancellations and rising holds is not retaining anyone; it is deferring the paperwork.
5. Failed payments — the leak a gym never notices
Every business with auto-pay loses money to expired cards and bank declines. A gym loses more of it, for a reason specific to the model: the member is not in the building to notice. In a class studio a decline surfaces at the desk within days; in a gym it sits open while the platform retries and, eventually, suspends the membership of someone who never knew anything was wrong. Work declines as a list with a schedule — a friendly note the same week, a link to update the card, a call by day five — and keep them out of the churn number. The failed-payments playbook is the seven-day version.
6. Revenue per member — dues are the floor, not the ceiling
Dues divided by members is the number everyone knows. The one that runs a good gym is total revenue per member — dues plus personal training, small-group training, nutrition, retail — and the attach rate behind it: what share of members buy anything beyond access. A member with a trainer checks in three times a week and does not sleep; the attach rate is a retention number wearing a revenue costume.
| # | The number | How to compute it | What it decides |
|---|---|---|---|
| 1 | Check-in distribution | members by weekly check-ins, last 30 days | who is sleeping, who a nudge can move |
| 2 | Sleeping members | zero check-ins in 30 days, still paying | the monthly reach-out, and the honest choice |
| 3 | 90-day retention by cohort | still active at day 90 ÷ joined that month | whether onboarding works |
| 4 | Net movement | joins − cancels; holds in their own column | the churn inside a flat count |
| 5 | Open declines | failed auto-pays by days open · $ recovered | the seven-day schedule |
| 6 | Revenue per member | all revenue ÷ members · attach rate | where the growth beyond dues is |
Where the numbers live
Every one of them comes from the check-in log and the billing history the gym's platform already keeps. What has to be added is the reading — the distribution instead of the average, each member against her own pattern, each cohort against itself — and the monthly reach-out to the zero band, which is the work that a quiet business never gets around to, because nothing is visibly wrong.
That is the shape Xyzios gives a gym. It connects on top of the platform you run — Xyzios works with Mindbody and Mariana Tek today, with more platforms on the way — reads the gym's own history as changes arrive, and puts the distribution, the sleeping list, the dues at risk and the open declines on one board, with the notes drafted in your voice for your approval. Nothing reaches a member without it, and nothing is written back to your booking platform except what you tap or approve.
Wherever you run the numbers, stop averaging the check-ins. The gym is two businesses, and the quiet one is the one that decides next year. Put your own churn in dollars, or read the twelve numbers that run a boutique studio.