Jonah Rosner

Welcome to Abis, the official channel for marathon training and running science. This is for dedicated runners and hybrid athletes who want to shatter PRs by training smarter, not just harder.

I'm Jonah Rosner, a sport scientist with over a decade of experience at the highest levels of professional sports, including running the Nike Performance Lab and working with the NFL. I founded Abis to bring the evidence-based strategies used by the world's best athletes directly to you.

This channel cuts through the "bro-science" and influencer hype. Here, you'll get deep dives on training strategy, strength & conditioning for runners, nutrition science, injury prevention, and myth-busting—all backed by peer-reviewed research and real-world data.