Coaching glossary.

The client ceiling is the number of clients a coach can serve before the quality of their coaching drops. It is the coaching hours a coach has each week divided by the minutes each client takes each week. Most coaches plateau between 30 and 50 clients.

In Fenlio: Fenlio works out your client ceiling from your own answers (how often clients check in, how long a reply takes, your hours), and Fen writes the replies so each client takes fewer of your minutes.

Source: Coachway, Online fitness coaching guide

Check-in debt is the backlog of client check-ins still waiting for a considered reply. It grows with every client added, and it is why a coach can feel full long before their calendar is.

In Fenlio: Fen reads each check-in as it arrives and writes the reply from that client's record, so the coach approves instead of starting from a blank page.

A readiness index (also called a fatigue index) scores how ready a client is to train today by comparing their recent sleep, energy, RPE and soreness with their usual. A low score suggests a lighter session or a deload.

In Fenlio: Fenlio computes the readiness index in code from what clients report in check-ins. When it is low, a scaled-back session is queued for the coach to approve. Wearable data (Oura, Garmin, Apple Health) is coming soon.

Auto-regulation is adjusting training (load, reps, sets or exercise choice) to how the client is actually performing and recovering, instead of following a fixed plan. RPE and reps in reserve are the usual tools.

In Fenlio: Fen reads RPE, training notes and reported recovery and proposes changes to upcoming sessions, such as an equivalent swap from the coach's substitutions or less volume, as a before and after the coach approves.

Source: NASM, How to use RPE and RIR to autoregulate client training

RPE is a 1 to 10 scale of how hard a set felt. On the common strength version, RPE 10 means no reps were left and RPE 8 means about two reps were left in reserve.

In Fenlio: Fenlio programs prescribe RPE or the coach's own percentages instead of fixed weights, and logged RPE feeds auto-regulation and the readiness index.

Source: NASM, How to use RPE and RIR to autoregulate client training

A retention score estimates how likely a client is to drop off, from behaviour such as slower logging, shorter messages, fewer workouts and missed check-ins.

In Fenlio: Fenlio computes the retention score in code from each client's own activity. An at-risk client gets a plain reason and an outreach message, written for the coach to approve.

Morning Sync is Fenlio's daily queue: only the clients who need a human that day, most pressing first, each with the action Fen already prepared.

In Fenlio: It is built overnight from check-ins, missed workouts and reported sleep, energy, RPE and soreness. The coach approves, edits or dismisses each item from Today.

In Fenlio, the safety floor is the rule that some messages always wait for the coach, whatever autonomy is set: anything touching an injury, allergy or medical note, meal plans and program changes.

In Fenlio: An injury, allergy or medical note on a client holds every message to that client until the coach reviews it.