A Year Of My Heart

A year ago, I decided to get all analytic on my training. Mainly I just like tech and pretty representations of data. So I bought a heart rate sensor. And now it’s been a year of me using it almost every time I train. Which means I can look at a year in the life of Frances training, with all the … whatever that reveals.

What does it reveal, Frances?

Well, other Frances. I trained 156 times — that I recorded, let’s say 170 because I pretty much did not train without it unless I forgot either sensor or phone. For a total of 190 hours — there’d be a few more in that for the times my phone battery died. For a measly distance of 1481 kilometres — of actual training rides, not including cross-town, Kreuzberg-Wedding type stuff, so maybe double that at least, no wonder I spend so much on my bike and it feels like it’s constantly in need of repair. Hey, just like me! (Wow, there’s a realisation, right there.) About 1/3 of that was ballet, another third cycling (mostly road at the moment, but some cyclocross), 1/6 bouldering, and the remaining 1/6th a mix of yoga and core training.

Oh, and supposedly I burned around 121,000 calories, which is about 60 days of eating 2000 calories a day. I’m not really convinced about this. I think it’s more of an imaginary number, and not the mathematical kind.

What else? Speed, both average and top are derived from iPhone GPS. I’m not sure how much dispersion there is in this, but I suspect it can easily be 5km/h or more in either direction. My next gear purchase (after … umm … new brakes and probably new rear derailleur pulley wheels) is a speed/cadence sensor — which probably means also a proper cycling head unit instead of phone …

I seem to unintentionally train in 9-10 week blocks, then give up in despair for a couple of weeks, then, like a goldfish circling its bowl, forget all that and get right back into it. Knowing that this might be my natural rhythm though, it could make sense to train in 9 week blocks with a week off, if for nothing else than keeping my enthusiasm. Also I doubt I’ve been training like that this year, my rhythm’s all over the place.

My maximum heart rate seems to be constant around 190 (excluding the huge jumps into the 200s that were either the battery going flat, the sensor getting jostled, or actual random heart weirdness from having stupid fun training in -10º weather). I dunno, I have no context or expertise for reading anything into these figures, other than I seem to like training if it involves a degree of discomfort and some suffering — which I didn’t need a heart rate sensor to tell me.

So, a year of data. What to do with it? No idea! Will I keep using it? For now, yes. It’s become automatic to put it on. I don’t really use it during training, though I’d use it for cycling if I could find an iPhone mount that could hold my ancient 4S. But mostly I do it on feel, and that corresponds pretty closely to the various heart rate zones. I do do regular post-training gawks, to compare how I felt with actual data — and knowing that data across sessions gives me a bit of a feeling for where I’m at on a particular day or week. And one other thing: I train a lot less than I think.

Worth it for seeing a year of training all pretty like that? Yup!

Polar Flow and H7 Heart Rate Sensor — One Year Weekly Training Report
Polar Flow and H7 Heart Rate Sensor — One Year Weekly Training Report
Polar Flow and H7 Heart Rate Sensor — One Year Daily Training Report
Polar Flow and H7 Heart Rate Sensor — One Year Daily Training Report