14:21

This is a recorded instructional workout by JJ Virgin (YouTube). The session is a 4x4 circuit-style routine consisting of three repeated circuits of bursts (step-ups, one-arm rows, bench push-ups, and power-core leg chasers) followed by one final set of bursts and a short stretch/cool-down. The instructor notes the workout is "fast, fun," and can be completed in about 15 minutes or less.

Questions this video answers

A "4x4" workout.

About 15 minutes or less.

Three circuits (followed by one additional final set of bursts).

Chapters

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