Tag Archives: Max VO2

Cardio time

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Last year I wanted to do one Max VO2 training session a week, but I really did it only every 2-3 weeks. This year I’m committed. My activity of choice right now is 8 one-minute sprint intervals. My interval timer is actually set to 1:15 high intensity followed by 1:10 low intensity. The reason for the additional time is that it takes about 13 seconds to get the treadmill from my low intensity walk, at a 3.4 pace, to my high intensity pace starting at 8.6 and progressing to 9.4 on the final one (I skip 8.7 for those that are math inclined).

I thought I’d share the stats from my watch for the last 3 runs, and then I can see how I compare closer to the end of the year.

January 11, 2025

January 14, 2025

January 20, 2025

I’m actually not trending well, with my average and overall heart rate going up, but fluctuations are to be expected and that’s why I decided to share the last 3. There are two big challenges ahead. The one I have control over is dedicating to doing this at least once a week. The one I have less control over is seeing how quickly I can get my heart rate to recover and if I can decrease my overall peak heart rate doing the same activity… this challenge should be achieved just from the commitment to do this weekly.

Time will tell, and the data doesn’t lie.

Doing hard things

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My workouts have stagnated a bit recently. I’m doing the minimum, but the good news is that I’m still showing up. Yesterday I did my first interval training in about 3 or 4 weeks. I want to do it weekly, but I haven’t made it part of my routine yet.

The reason I haven’t made interval training part of my regular schedule yet is embarrassingly simple: It’s really hard. The purpose of doing intervals is to maintain and improve my Max VO2 levels. To increase Max VO2, I need to not only do intervals, but do them at a very physically taxing level. That’s hard to do when just showing up is a challenge for me right now. But yesterday was a day off work and so I used the day as an opportunity to get an interval workout in.

I did a warm-up then eight 1-minute sprints. My sets are actually 1:15 hard and 1:10 easy, because it takes about 13 seconds to get my treadmill from my easy recovery speed to full sprint and I want the sprint to be a full minute. It’s not fun, but it’s much easier than the Norwegian Protocol which is four 4-minute sprints with 3-minute rest intervals. And I think that’s going to be my ticket to get back into regular intervals. When a task is hard to do, break it down into something more manageable. I can talk myself into 1-minute sprints even when I’m not feeling fully motivated… four 4-minute sprints feels like torture right now.

Through all this I’ve still been very consistent with my zone 2 training, but I think even that has not been ideal. I’m not sure how effective I’ve been because I haven’t been tracking my heart rate and so I’m not certain if I’m getting and staying in the zone. That’s changing this month, when I buy myself a Garmond watch, then I’ll really be able to track my cardio workout progress. I’m hoping the extra data will help motivate me to push myself.

When consistently doing hard things, maintaining motivation is important. I’ve become a master at showing up. My dedication to my workout habit is unwavering. Last year I did 326 workouts, and I’m on schedule to be around that total this year. I know how to show up! But if I were to rank myself on an intensity scale, this year would be much lower than last year. So my focus is to finish the year hard and strong. And I’m fortunate that I’ll have the tools to help track this. It benefits no one to lie to myself about how hard I’m working, and so the extra data the watch will give me will both inform me, and keep me honest about my progress.