The Philadelphia Half Marathon
Training with POTS means the plan is never really the plan. I’m learning when to push, when to adjust, and when calling it for the day is actually the smarter move.
Hi, I’m
Kelsy
Clark.
I write about life with chronic illness — the useful stuff, the hard-to-explain stuff, and everything I’m figuring out along the way. Somewhere in there, I’m also training for my first half marathon.
Right now
What’s taking up space in my brain.
Making chronic illness content that actually feels like real life
Not just the doctor appointments and bad days. Work, groceries, training, random wins, flare days, and everything that still has to happen in between.
How to get stronger without making myself miserable
Strength training, running, food that actually keeps me full, and slowly letting go of the all-or-nothing mindset.
The things I wish someone handed me sooner
Books, trackers, guides, and resources that make living with chronic illness a little easier to figure out.
A little more context
Hi. I’m Kelsy.
Most days I’m somewhere between a training run, a book idea, an appointment, work, and figuring out what we’re having for dinner.
I live with POTS, MCAS, hypermobility, and fibromyalgia. I talk about chronic illness a lot because it’s part of my life — but it isn’t my entire life.
I started sharing because I kept realizing how many of us were trying to put the exact same feelings into words. Now I write books, make videos, create resources, and share what I’m learning as I figure out what living well with chronic illness looks like for me. This site is basically where all of that lives.
If you’re new here
What brought you here?
You don’t need to read everything. Pick the reason you came, and start there.
I’m figuring out POTS
Start with Living with POTS and grab the free guide — the things I wish I’d had when I was trying to make sense of everything.
I need something practical
Trackers, guides, and tools for managing symptoms and keeping all the information somewhere other than your brain.
I need help figuring out the life part
1:1 POTS support — six weeks with me, one on one, about pacing, work, energy, and how to actually live with this. Founding spots are open.
I’m just here to hang out
Come over to TikTok for training, chronic illness, regular life, doctor days, and whatever else is happening that week.
The library
Books + resources.
Everything I’ve made to help make chronic illness a little easier to understand, track, explain, or live with.
Books Three places to begin
Practical things Download, print, or keep open
New / 1:1 POTS support
10 founding spots — 6 weeks for $149
Help with the part that happens after the diagnosis.
Six weeks of one-on-one support, not a single call. We start with a long conversation about what your days actually look like — work, school, energy, pacing, appointments — and then I stay with you while you try it: check-ins every two weeks, email in between, and a written plan that gets rewritten once real life has had a say. Not medical advice. Lived experience, from someone who has been figuring this out for years.
Who it’s forYou were just diagnosed and you have no idea what happens next.
Also forYou know what you should be doing — you just can’t make it hold for more than a week.
You leave withA Life-with-POTS Game Plan built over six weeks, and the option to keep going monthly.
Philadelphia Half Marathon / 2026
Why I’m running Philly.
I’m training for my first half marathon with Team Uplifting Athletes and raising money for the rare disease community along the way.
“Training for this race isn’t about proving that POTS doesn’t affect me. It does. It’s about learning what my body can do now — and raising money for people living in bodies that require a little more figuring out.”Support my half marathon
The blog
Field notes, in longer form.
Some things don’t fit in a caption. This is where the longer version goes — training, pacing, and the parts of chronic illness that take more than thirty seconds to explain.
Read the blogWhat half marathon training with POTS actually looks like
I started training in May for a November race, and almost none of it has gone according to the plan — a Florida summer, POTS symptoms, and a motorcycle accident in the middle of it.
Read the postA few regulars
Things I actually use.
The small shop
Chronic Illness Club, but make it wearable.
A few things I made for the people who get it.
Occasional emails
The Chronic Illness Club.
A little corner of the internet for people who get it. I send the things that are worth sending — new resources, book updates, things I’m learning, and the occasional note that’s too long for a caption. No pretending I have everything figured out. Just useful stuff and real life.