Intent: Read effort through the breath.
Focus: Breath rate, depth and sound as early signals of rising effort.
Practice: An easy run with a breath check-in every five minutes, using the talk test.
Reflection: Did your breath or your ego decide the pace today?

Guided practice with Alice (9:41)

Play this through headphones on your run. The long silences are deliberate. Alice is the AI guide from Sigwren. You can also download this track from the Exercise Files tab to play offline.

On every run you’ve ever done, your breath has been reporting on how hard you’re working. Most of us don’t listen. We look at the watch instead, and the watch is always a little behind. Heart rate takes time to catch up after the effort changes, and on a trail, pace tells you very little because the ground keeps changing under you. Your breathing responds within a few breaths.

Coaches have used this for a long time, and over the last decade sports scientists have shown why it works: breathing rate tracks how hard an effort feels very closely, often more closely than heart rate does. When your breath changes, the effort has changed.

There are three things to listen for.

• Rate. How quickly you’re breathing. You’ll feel the rate climb before you think about it. In module 3, your Gears give you a way to measure it against your steps.
• Depth. Low and full, or shallow and high. As effort or stress rises, the breath tends to get shallower and move up into the chest.
• Sound. Silent, audible, or loud and ragged.

Sound is the easiest to use. On a recovery run your breathing should be silent, and if you can hear it, you’ve drifted into a harder effort. On an easy endurance run you’ll hear a steady rhythm, and you can still hold a full conversation. Your Sigwren sessions use exactly these markers.

Then there’s the talk test, one of the oldest coaching tools and still one of the best. How many words can you say comfortably on one exhale? Full sentences mean easy. A few words at a time means you’re working. Single words mean you’re close to your limit.

Read it, then decide. The gauge gives you information, and what you do with it is a decision. A breath that’s quicker than you expected on an easy run might mean you’re going too fast. It might also mean you’re tired, hot, stressed or coming down with something. You don’t need to fix it immediately. Notice it, then decide. That difference between reacting to your body and listening to it runs through this whole module.

The practice. Go for an easy run of 30 to 40 minutes. Every five minutes, check in: rate, depth, sound. Then do the talk test by saying a sentence out loud or counting to ten on one exhale. Only then look at your watch. Over a few runs you’ll find the breath tells you first.

On your next run. Each time you look at your watch, check your breath first and guess what the watch is going to say.

Reflection. Did your breath or your ego decide the pace today?