Performance Nutrition

Stefanie Gilbreath

CEO, COO

Contact: Stef@gopowerportions.com

Stefanie is a University of Southern California graduate with a degree in human performance, having played women’s college basketball at both USC and New Mexico State University. She went on to play professional basketball for two years in Portugal and Germany. After spending her off-seasons in advertising at Gilbreath Communications Inc., Stefanie took on a full-time position as director of social media marketing and accounting at Gilbreath. In pursuit of another passion, Stefanie joined forces with her sister, Briana, to launch Power Portions, a healthy meal prep company developing nutritional meals for the athletic community as well as the general public. With her experience in business, accounting and athletics, Stefanie brings an excellent multi-faceted dynamic to Power Portions.

She has maintained a dedication to community service dating back to her college years, having been a volunteer for organizations such as the Boys and Girls Club of Santa Monica (as a nutrition leader), Sports Buddies (Jewish Boys and Girls Club of Glendale), Elementary School Girls Basketball Camps in Lousada, Portugal, Feeding America, Save the Children and Ascent Humanity Outreach, among many others. Along with her dedication to healthy meal prep, Stefanie believes her faith has led her to serve children struggling with obesity and applies her experience in this area into Power Portions’ efforts to give back to society.

Briana Butler

CEO, MCN, RDN, LD

Contact: Bri@gopowerportions.com

Briana Butler is a registered dietitian nutritionist and former professional athlete serving the Houston area. Briana holds a bachelor’s degree in Human Performance from the University of Southern California and a masters’ degree in Clinical Nutrition from the University of Texas Southwestern Medical Center. The latter of which she received after playing in the WNBA and overseas for three years. Upon retirement from professional sports, Briana followed her passion for health and athletics by pursuing a career in performance dietetics, believing from experience that nutrition efforts and performance are congruous. Since switching careers, Briana has worked with collegiate, professional (NFL, NBA, WNBA, NBA G-League, Ultra Marathon & Cyclist), NFL combine, NBA combine, and health and wellness clients in private practice and under world-renowned brands such as Southern Methodist University, EXOS, Gatorade Sports Science Institute, and the Dallas Cowboys. Above all, Briana finds purpose in being a wife to her husband Brice and full-time mom to her son Braiden.

Destinee Williams

NUTRITION FELLOW, RDN, LD

Contact: Destinee@gopowerportions.com

Destinee Williams RDN LD is from Tucson, AZ. She recently graduated with a Bachelors of Science in nutrition and dietetics and minor in human performance from Prairie View A&M University. While pursuing her degree, she was the second baseman for the PVAMU softball team. Soon after graduation she completed her dietetic internship with Southern Regional Medical Center in Atlanta, GA. As a student-athlete, she began her love for nutrition and discovered the importance it had on her performance. She is currently a pediatric dialysis dietitian and is studying to obtain her Masters in Public Health. With her passion for fitness and athletics, she plans to motivate people who aspire to achieve their health goals. Destinee is an aspiring sports dietitian who would love to work with collegiate athletic departments to provide nutrition education and intervention. During her free times she loves to bake and spend time with her loved ones.

Marissa Casella

ASSOCIATE DIETITIAN, MS, RD, LDN

Contact: Marissa@gopowerportions.com

Marissa is a registered dietitian from the Philadelphia and New Jersey areas with a passion for helping individuals reach their goals with an ALL foods fit mentality. After earning her bachelor’s degree in Nutrition & Dietetics from Immaculata University, Marissa went on to receive her master’s degree in Nutrition & Food Science from the University of Southern Mississippi. While completing her undergraduate degree, Marissa was a part of the women’s volleyball team and quickly implemented her knowledge learned in the classroom into personal goals of achieving success on the volleyball court. Witnessing small changes in her own lifestyle make large impacts on the court, strengthened her passion for sports nutrition and educating others to fuel their own athletic performances. Throughout her time as a registered dietitian, Marissa has worked in a variety of diverse settings while impacting the lives of individuals to meet their goals, large or small. Most recently, in her position as a sports & performance nutrition fellow at Drexel University in Philadelphia, PA, she was exposed to many experiences with both collegiate and professional athletes. Including but not limited to, team-wide and athlete-specific nutrition education, management, and administrative duties in order to provide all teams with the attention they need to thrive. Her specialties include individual and group nutrition counseling on sports nutrition, weight-related goals, gastrointestinal diagnoses, diabetes, allergies, and much more! When not immersed in the nutrition and sports world, Marissa finds herself cooking up new recipes in the kitchen, enjoying quality time with friends and family, or discovering new hiking trails to explore with her puppy, Miley!