Ketogenic Diet's Effect on Body Composition
Rachel Gregory made waves when she completed the first-ever human clinical trial on the effects of a ketogenic diet on non-elite CrossFit athletes. It was a landmark study that became the backbone of her master’s thesis, and in 2016, the results were published. This wasn’t just another nutrition study; it was the beginning of a career-defining journey into the world of low-carb and ketogenic lifestyles. From that moment, Rachel committed herself to digging deeper into the science of nutrition, and it completely shaped her future.
Since then, Rachel has fully embraced the ketogenic diet, both in her personal life and with her clients. She didn’t just settle for the theory; she lived it. She experimented, tested, and figured out what worked and what didn’t. Her approach has always been grounded in real-world results, not just the latest fad. Through all this, Rachel has become a real expert in metabolic flexibility—teaching people how to switch between fuel sources efficiently based on their diet and energy needs. This is especially crucial for people who’ve followed strict low-carb or keto diets for a while and are now trying to find a better balance. A lot of women, in particular, struggle with finding the right flexibility to suit their lifestyle without sacrificing their health, and Rachel has become a go-to resource for helping them figure that out.
Over the past few years, she’s taken a more holistic approach by incorporating strength training into her guidance with a focus on women. She’s all about lifting weights, building muscle, and showing the benefits that go way beyond just the physical. Strength training helps build mental resilience, confidence, and overall well-being. It’s not just about changing how you look; it’s about changing how you live.
Rachel’s journey reflects a commitment to long-term health, focusing on flexibility and balance over rigid rules and restrictive diets. She’s all about creating sustainable changes, not quick fixes. She’s built her career on helping people not just survive but thrive, through smart nutrition and strength training that builds both body and mind. And that’s what makes her approach so effective, she’s about the long game. It’s not just about being strong today, but about being strong for life.
John Welbourn is Founder/CEO of Power Athlete Inc and former NFL player. John was drafted with the 97th pick in 1999 NFL Draft and went on to be a starter for the Philadelphia Eagles from 1999-2003, appearing in 3 NFC Championship games, and started for the Kansas City Chiefs from 2004-2007. In 2008, he played with the New England Patriots until an injury ended his season early with him retiring in 2009. Over the course of his NFL career, John started over 100 games regular season games with 10 play-off appearances. He was a four-year letterman while playing football at the University of California at Berkeley. He graduated from the college of letters and sciences with a bachelor's degree in Rhetoric in 1998. And did his Masters work at the UC Berkeley School of Education in 1999. Since retiring from the NFL, John has worked extensively with the NFL, NHL, MLB, Olympic athletes, the US Army and Naval Special Warfare. He works as a consultant and advisor for several companies focused on improving human performance through training, nutrition and fitness-based technologies. John provides daily coaching and mentorship to over 5000 athletes around the world through his Power Athlete Coaches Network and training program delivery platform. Since in 2013, John has hosted a weekly podcast, Power Athlete Radio; a podcast dedicated to improving performance and connecting with some of the smartest people on the planet. With more than 700 episodes Power Athlete Radio has proven to be on the top podcasts in the strength and conditioning realm. John travels the world lecturing on performance and nutrition for Power Athlete and as a keynote speaker. John is a married father of three and resides in Austin, Texas. You can catch up with him at his personal blog, “Talk To Me Johnnie”, at Power Athlete or on social media @johnwelbourn.