Can 10 Minutes of Daily Breathing Fix a Broken Nervous System?
My HRV had been sitting in the low-to-mid 30s for months (and maybe even years). I was nearing burnout with work, wedding planning was adding pressure on top of that, and I knew I was stressed beyond a normal level. I’d dipped my toes into box breathing before, but it was only a session here and there. I had never committed to making breathwork a habit. So for this challenge, I decided to find out if breathwork actually could help improve my HRV and my stress levels, or if it just was something that felt good while doing it. The Challenge: 21 Days of Breathwork My challenge is simple: at least one 5-minute breathwork session, every day, for 21 days. Understand the Challenge I was going to try to get my breathwork done in the mornings as the default, but if evening worked better on a given day I didn’t want to stress about it (makes sense given the goal of this challenge was to reduce stress, right!). Ultimately, consistency mattered more than strict adherence to timing. I just had to get the session in each day. Clarify Your Intent I wanted to lower my stress and improve my HRV. Honestly, I was feeling like a shell of my former self with all the stress I was carrying… I hate to admit it but I had too short of a temper and would get triggered by the smallest inconvenience. I knew I needed a reset. Set Your Personal Baseline My 30-day HRV average via Apple Watch and Bevel was 34.1ms. I know HRV is highly personal, but I’ve always been surprised mine runs on the low end considering how much I train and how good my overall health is otherwise. With how much I work out and the endurance events I do, I figured chronic stress was doing most of the damage. Bevel also gave me two secondary numbers to track: Non-Activity Stress at 37 and Sleep Stress at 8. I didn’t have a great read on what those meant in absolute terms, but they gave me something to compare against at the end. No prior consistent breathwork practice. I knew what it was and had tried it occasionally, but never treated it as a daily habit. Finalize Your Plan My plan going in was box breathing (4 seconds in, 4 seconds hold, 4 out, 4 hold) for week one using the Oak app, then a shift toward coherent breathing (slower, no holds, around 6 breaths a minute, which is where most of the HRV research points) for weeks two and three using Insight Timer. That’s not how it went. I found Insight Timer had a ton of free programming and I ended up scratching the Oak app entirely, sticking with coherent breathing through Insight Timer for the whole 21 days. I actually made this decision on the first day after seeing how much good (and free) content there was on Insight Timer. I started by watching a 17 minute video on the benefits of coherent breathing and how to perform it correctly (this was called “I Reset my Nervous System With Coherent Breathing” by Neil Tranter). It was a great into to coherent breathing and Neil also offered an easy unguided timer (this was called “Coherent Breathing Bells (Unguided) | 6s/6s | 5 bpm”). I highly recommend those for anyone searching. To track progress, I checked my HRV from Bevel each morning, plus a daily subjective score for stress and clarity, both out of 10. This wasn’t scientific, but it gave my HRV numbers some context. Establish Accountability Same as always: my fiancée knew I was doing this, and she’s good at calling me out if I start skipping things. Beyond that, the Bevel data is its own accountability. Numbers don’t lie. Daily Log Summary Days 1 to 3: I did the previously mentioned 17 minute session instead of 5. I got pulled into a guided coherent session and lost track of time, which felt like a good sign, but I also had no idea if I was breathing from my diaphragm or my chest, and spent half the session thinking about that instead of actually breathing. HRV jumped to 53.7 on day 2, which I chalked up to swimming the day before instead of lifting. That confusion about whether I was doing it “right” followed me most of the first week. Days 4 to 7: My dog turned into a recurring companion during my breathwork sessions. She’d nudge me for pets mid-session, and more than once I ended up petting her while trying to hold my breathing rhythm. Day 5 I gave up and let her win. Didn’t feel like the session did much that day, and I don’t think that’s a coincidence. HRV bounced between 37.8 and 60.3 this stretch, with no clean pattern to point to yet. Days 8 to 12: Day 9, my HRV dropped to 20.7 after a hard HIIT workout and a night out watching the USMNT (this was during the World Cup) that ended in more beers than I’d planned. I wasn’t feeling my best the next day and did my session in a hammock chair outside, though I think the hammock messed with my posture more than yesterday’s beers messed with my head. By day 12, on the back half of a few PTO days, I was feeling genuinely relaxed and at peace. Days 13 to 17: Day 13 was the first day back after some PTO. I went into the session feeling chaotic and grumpy after wrapping some critical work tasks, and came out of it noticeably better. Day 14 was the opposite, my mind was bouncing between a business idea and an upcoming interview, and I couldn’t tell if the session made any real difference. HRV in this stretch ranged from the mid-40s to a surprising 59.2, with no obvious correlation to how the day had gone. Days 18 to 21: Day 18 I woke up so groggy