Testimonials

I’ve known Sean for many years now and he’s a very hard working guy. He’s a great trainer and really knows what he’s doing. I’d highly recommend any of my Olympic teammates and friends to him.

— Matthew Centrowitz: 2016 Olympic Gold Medalist- 1500m

In Rio de Janeiro right after winning gold!

Sean O’Brien is an exceptional athlete turned trainer who understands the needs and demands of a professional, but has the knowledge, desire, and passion to work with individuals of all levels, ages, and abilities. He is creative, meticulous, and delivers an attainable, yet highly challenging workout. Sean has an excellent understanding of the human body and is committed to educating his clients while simultaneously motivating them through each individual exercise. He has traveled across the globe and brings a wealth of knowledge of different practices into his client’s routines. He mentored me both physically and emotionally through injury and I returned to the track faster than when I left. He is the most dedicated, attentive, and devoted trainer I’ve ever worked with.

Julie Cully: 2012 Olympian 5000m – Head Coach Georgetown University Track Team

  • “I started working with Sean when I broke my foot – making me a competitive runner that couldn’t run. He worked with me to craft a program that maintained my strength and set me up well to return to running once my foot healed. Even after I was back on the road, I continued to work with Sean, learning how to use props like medicine balls and hurdles to improve my running. My work with Sean directly paid off, and I do not hesitate in recommending him highly.”

    Cristina B.

  • Sean was incredibly patient and never gave up on me; with his encouragement, I eventually started to see results and grew excited about the potential for change.I lost a substantial amount of weight and dropped 3 dress sizes. But even more importantly, my confidence and interest in health and fitness have improved immeasurably. Sean varies my training sessions enough to keep me interested and motivated. He’s also very good at modifying exercises for my body’s limitations (Including an ankle injury that I’ve had for years), while keeping them challenging and improving those weaknesses. Rather than focusing on quick weight loss, Sean has taught me to focus on my overall health, including strength training, core strength, and flexibility. As a result, I’ve noticed substantial improvement in all of those areas and my outlook on health and fitness has never been better.

    Terri D.

  • Few things in life turn out as publicized. One of those few is training with Sean. Sean listened to my goals, tailored training sessions to address those goals, and motivated me to train with intensity. As a result, I was physically prepared for ascents of Mt. Baker’s North Ridge, Forbidden’s West Ridge, and other trips. And he’s a great guy!

    James W.