Glossary

On Cycle

Updated February 28, 2026

On-cycle is the active testing period where a stack is intentionally run and monitored for effect and tolerability.

Why it matters

It is where dosing logic and outcome logging produce most of the adaptation signal.

What happens during on-cycle

Weekly review should include sleep, GI tolerance, and goal progress.

Restart and escalation rules

Escalate only when:

If outcomes plateau or adverse signals rise, move to maintenance review or pause escalation.

End-of-cycle exit criteria

Use explicit exit rules before you run out of interpretability.

Practical action step

Before starting each on-cycle, set a hard review day and one criterion for stopping or adjusting.

Uncertainty and limits

Cross-site references

How this appears in Unfair

On-cycle states alter recommendation confidence by favoring current-cycle adherence and de-prioritizing outdated stack behavior.

Clinical safety note

If adverse symptoms increase with repeated use, exit the cycle and request clinician input before re-entry.

Related

Stack Cycle

A stack cycle is the structured, repeatable sequence of phases that governs how a supplement protocol is run, evaluated, and either renewed or retired

Off Cycle

Off-cycle is the planned break between active build periods to reset adaptation and reassess need.

Supplement Stack

A supplement stack is a [grouped set of ingredients](/blog/complete-guide-to-supplement-stacks) chosen to work together toward one outcome architecture.