Your GO² Endurance device is simple to use, but like any piece of performance gear, it feels best once you have spent a little time with it. Give yourself two weeks of easy, consistent practice before you judge it — or race in it. That short break-in period is where the device stops feeling new and starts feeling like part of your routine.
Week One: Start Easy and Let Your Breathing Adjust
In your first week, the goal is comfort, not speed. GO² is designed to change how you breathe during effort, and your body needs a few relaxed sessions to settle into that new rhythm. Keep the effort conversational. If you are gasping, you are going too hard for a first-week session.
- Start with shorter, easier workouts — an easy run, a steady ride, or a relaxed training session — rather than a hard interval day.
- Focus on steady, rhythmic breathing and let the device do its job instead of forcing your breath.
- Use GO² for part of a workout first if you prefer, then build up to wearing it for the full session.
- Finish each session by noticing what felt smooth and what felt awkward, so you can adjust your fit next time.
Week Two: Build Toward Race Effort
Once wearing GO² feels natural on easy days, start bringing it into the kind of work that actually tests your breathing: tempo runs, longer rides, hill repeats, and race-pace efforts. This is where many athletes start to appreciate what the device is for. GO² is the only breathing device scientifically proven to increase oxygen and endurance while lowering heart rate, with endurance up 6% and VO₂ max up 4%.
- Add one moderately hard session with GO², then one longer session later in the week.
- Practice exactly how you plan to race — same fit, same warm-up, same routine — so race morning holds no surprises.
- Do at least one dress rehearsal: your full race-day kit, your planned pace, and GO² from start to finish.
- Never debut a new fit, a new routine, or a new device on race day itself.
Fit and Care: The Small Habits That Keep GO² Ready
A good fit should feel secure without demanding your attention. You should be able to breathe, talk, and focus on your workout — not on the device. Take a minute before each session to settle it into a comfortable position, and take a minute afterward to look after it.
- Fit it so it stays put through your full range of motion without pinching, slipping, or distracting you.
- If something feels off mid-workout, pause and readjust. A small fit fix beats a full session of fidgeting.
- After training, rinse your device with water, let it air-dry fully, and store it clean and dry.
- Keep it in a clean, dry spot between sessions so it is ready to grab on your next training day.
What to Expect as You Settle In
Most athletes find the first session feels different, the third session feels familiar, and by the end of week two the device fades into the background. That is the point: you stop thinking about breathing and start thinking about your race, your pace, and the finish line. GO² uses patented technology, it is designed by doctors, and it costs $60 — a one-time piece of gear with no expiration date.
Ready to start your own two weeks? Get the GO² Device for Endurance and begin with an easy session this week. Your breathing is the engine. Train it.