Running, Weather, and the Fine Art of Not Wrecking My Kidneys

Written January 30, 2025

Hello Dear Readers,

Yesterday’s run? Surprisingly pleasant. The weather was in that sweet spot—chilly enough to make standing around feel like a questionable life choice but with just enough sun to turn things comfortable once I got moving. It’s that perfect running paradox: too cold to stand still, too warm to bundle up. And best of all? I managed to beat my target pace for the first 5K again, which means I’m still holding onto my ever-diminishing speed goals. A small but satisfying victory.

Now, let’s talk about my body’s complicated relationship with temperature. Ever since my brain stroke, my autonomic nervous system has been a bit of a diva—it no longer regulates heat or cold properly. If the weather swings too far in either direction, my endurance takes a nosedive. Some runners struggle with pacing, others with motivation. I struggle with the fundamental issue of my body, deciding it simply does not approve of temperature extremes. It’s like a toddler refusing to eat anything but macaroni and cheese.

Because of this, I’ve been forced to become a part runner and part-amateur meteorologist. I check the forecast religiously, sometimes more than I check my emails. My weather app claims it can predict the weather up to 10 days in advance, though let’s be honest—it’s basically fortune-telling after a week. Still, it gives me a decent heads-up on what’s coming. And when you have a body that treats temperature changes like a personal betrayal, planning ahead is crucial.

Take tomorrow, for example. Warmer weather is on the way, which means hydration is about to become my new best friend. That also means my pace might start to slow because staying hydrated and pushing for speed don’t always go hand in hand. And here’s where things get tricky. I love progress. I love seeing the numbers on my running app improve. But I also love having functioning kidneys, and unfortunately, one comes at the expense of the other.

Dehydration is bad for anyone, but for me, it’s particularly risky. My kidneys already function at less than full capacity, so letting them get parched isn’t just a bad idea—it’s a potentially dangerous one. Pushing my limits is one thing; actively sabotaging my health is another.

So, if I have to choose between breaking a personal record and keeping my body happy, I’ll choose my health every time. Okay, maybe not happily, but let’s call it a mature decision. It’s the kind of choice I’ll have to keep reminding myself of mid-run, especially when the competitive part of my brain whispers, just a little faster, you can still beat it.

But in the end, running is about longevity, not just speed. And if slowing down a little means I get to keep running for years to come? That’s a trade I’m willing to make even if my inner speed demon protests the entire way.