Breathing drills for the rower, bike, barbell and bar, plus a simple reset that keeps you calm between sets in hard workouts.

A minute-by-minute walk through a sample chipper, showing how early pacing decisions decide how you finish a long list.

How to dose sprint intervals so every effort stays fast: warm-ups, rest periods, a dosing table and the mistakes to avoid.

Six heart rate myths CrossFit athletes still believe, and how to build training zones on a number that is actually yours.

What threshold pace is, how to find yours without a lab and a menu of sessions that raise the ceiling of every workout.

How to choose reps for every-minute-on-the-minute work, plus three sample EMOMs for aerobic volume, skill and threshold.

Break the burpee into four phases, attach your breath to each one and pick a rhythm you can still hold in the final minute.

A six-week 5K build that fits beside your classes, with honest pace targets and a race plan for the kilometer that hurts.

A 500-meter-by-500-meter race plan for the 2K row: set a smart target split, settle early and finish with your fastest strokes.

A frame-by-frame breakdown of the ski erg stroke, showing how a strong hinge, not your arms, drives more power for less effort.