You can lose about 7% of your bodyweight in a single day before it starts to impair your performance. For a 180 lb person, that means you can lose almost 13 lbs of sweat. The average human stores about a day’s worth of calories in muscle glycogen. Once you burn through that, you’ll experience something called “hitting the wall”. People who aren’t trained for this will quite literally just… stop working. They’ll fall over and not be able to move. With training, you can make your body better at burning fat to keep your muscles moving even when you surpass the limits of normal human endurance.

Source: used to run ultramarathons and do alpine style mountaineering

No, they refuse to speak to me to this day. My gf’s family called her to wish her a happy birthday last week, and i cried quietly wishing mine did that too.

I was born into an impoverished extremist right wing family. I enlisted in the military back when DADT was a thing. I was disowned as an LGBT teenager, and medboarded out of the military after being committed to inpatient facilities multiple times. After that, i was homeless for a couple years, living out of a car and then a backpack.

I finally ended up in this little town in Georgia, got a job at a little retail store, and moved into a trailer with one of my coworkers. Her friends kind of adopted me and i felt accepted for the first time in my life. We were all broke kids, but i told them i was going to be a millionaire by age 30. I was still pretty emotionally unstable and eventually moved on from that friend group, but it gave me the hope i needed to rebuild my life.

I slowly built a career for myself after that, working 70-80 hours a week for a couple years, until i had my foot in the door. It got a lot easier after that. I didn’t quite hit my goal by age 30, but I’m close. I founded my first company at age 28, and raised a 10 million series A. My company is now worth 60 million on paper, but of course that’s meaningless until we IPO. But it’s profitable, and in the meantime, I’ve adopted a little family of people like me, and built a comfortable life for us. Life is good, and I’m content.