Hi, I’m Kousuke Ariga, the developer of Poslog.
Originally, I was a graduate student researching AI and robotics. But despite spending all my time at my desk, I was struggling with severe lower back pain. It got so bad that I couldn’t even sit down without discomfort. I’d go for massages, and while they provided temporary relief, the pain always came back. It was affecting my studies, and honestly, it was miserable.
Then, I met a top athletic trainer who introduced me to the concept of muscle imbalances and compensatory movements. He also shared a quote from the physiologist Charles Sherrington: “Posture follows movement like a shadow.”
In other words, it’s not enough to just loosen tight muscles. You also need to strengthen the underactive ones to balance the body and align posture. Proper posture is essential for every movement, and muscle imbalances show up as compensatory patterns that can lead to pain.
This was a complete revelation for me. For the first time, I understood that my chronic back pain wasn’t just something I had to live with. It had a clear cause — a mechanical issue that trainers and therapists could spot by analyzing posture and movement. Once I understood the mechanics, I was more motivated to stretch and train properly, and my back pain completely disappeared.
That experience lit a fire in me. I realized that the goal of treatment shouldn’t just be to mask the pain but to improve movement patterns. From then on, I became obsessed with figuring out how to make what top trainers and therapists see accessible to everyone.
I tried different approaches. Explaining it in words was tough, so I thought, why not show posture through images? Still images weren’t enough, so I added slow-motion playback to help users see compensations more clearly. And to make it practical for busy trainers and therapists, I kept the app as simple as possible.
That’s how Poslog was born — through countless iterations and feedback from real users in the field.
Sherrington’s quote continues: "Every movement begins in posture and ends in posture.” If I could humbly add to that, I’d say movement is a series of postures. And Poslog allows you to capture, visualize, and analyze every posture in motion.
My hope is that Poslog can help more people resolve the root causes of pain so they can move freely and give their best in whatever they do.
Thank you for reading and for your interest in Poslog. If you have any comments or questions, I’d love to hear from you. Feel free to reach out directly at kouariga@poslog.com. I look forward to connecting with you.
July 27, 2022
Kousuke Ariga
Founder & CEO