Content warning: This article contains descriptions of physical abuse. The day I got my blue belt in Brazilian jiu-jitsu, I found myself flat on my back, crushed under the 6'4", 190-pound frame of my coach, who was also my husband, John. But as I'd already learned, when it came to this 2,000-year-old martial art , being down didn't mean you were out.

I clenched John's arm and pinned it between my legs. I lifted my hips into the air and began to hyperextend his elbow. If I kept going, the joint would dislocate.

When I felt three taps on my thigh, I released his arm. He had given up, and I had completed the last step of the skill test I had to pass in order to earn my blue belt. Applause engulfed me as I stood to my feet.

John and I bowed to one another. From within his gi jacket, held in place by a black belt, he withdrew my new blue belt and fastened it around my waist. By that day, I'd marked countless hours of training, mostly with men who were bigger and stronger than I was.

I'd proven to myself and others that I was tough, that I could endure being smashed and find the strength to keep going. John cupped my face and squeezed me close. A mom of one of his students in the audience said she cried.

I called it "my blue period" when I posted the photo on Instagram. That day, I put forward the part of me that felt powerful. I was thrilled to have earned my blue belt, in part because I thought that if I excelled at this martial art, I was still in control.

But there was another .