FLEX glossary

Training and app terms

• Program: an ordered group of routines, often representing a training split.
• Routine: a reusable workout template containing exercises and default targets.
• Workout: one active or completed training session.
• Working set: a normal performance set used for workout and progress summaries.
• Warm-up set: preparation work marked separately from working sets.
• Superset: two or more exercises intentionally grouped during a workout.
• HIIT: guided high-intensity interval timing with work and recovery phases.
• Volume: a calculated total based on completed load and repetition data.
• Estimated 1RM: a formula-based estimate of one-repetition strength.
• Guest Mode: a local-only profile without account sync.
• PWA: the installable browser version of FLEX.
• Entitlement: the account or store status that unlocks FLEX Pro.
• Import from code: open and preview a routine or program using a five-character share code.
• Shared copy: an independent snapshot that does not follow future edits to the sender’s original.