You already track pace, heart rate, and power. But the system that drives all of them-your breath-usually gets left to chance.

Breath Protocols for Weekend Endurance Athletes is a practical field guide for recreational runners, triathletes, and cyclists who want simple, short breathing routines that fit into real life. No mystical language, no hour-long sessions-just targeted 5, 10, 15, and 20-minute protocols you can plug straight into your warm-ups, hard workouts, and recovery days.

Across ten clear, no-nonsense chapters, coach Evan Hartley shows you how to turn breathing from a vague idea into a repeatable training variable you can test, track, and actually feel working.

Inside, you'll learn:

- Why your breath is the "missing workout" in most endurance plans-and how small breathing changes can improve pace, perceived effort, and recovery without adding more miles.

- Breathing basics without the jargon so you can understand CO₂ tolerance, nasal vs. mouth breathing, and cadence without needing a physiology degree.

- Safety and red flags for breath holds, over-breathing, and dizziness-plus how to scale every protocol if you're new, detrained, or coming back from illness.

- Quick self-tests for CO₂ tolerance, nasal flow, and RPE so you can see, in minutes, how your breathing responds to training and stress.

- Warm-up breathing protocols for runners that prime your lungs, calm pre-session nerves, and make the first kilometers feel smoother instead of like a shock to the system.

- Warm-up breathing protocols for cyclists and triathletes that pair with the trainer, spin-ups, and brick sessions-especially useful if you start hard efforts feeling "stuck" or tight in the chest.

- In-session breathing for threshold work so you know exactly how to breathe during tempo runs, intervals, and hill repeats to hold form longer and keep your effort