Dallas Hartwig, MS, PT, CISSN, is a certified sports nutritionist, licensed physical therapist, and functional medicine practitioner who specializes in addressing the underlying causes of disease using a systems-oriented approach. He co-owned and operated a strength and conditioning facility until founding the online community Whole9 (whole9life.com) with his wife, Melissa, in November 2009. They live in Salt Lake City, Utah, and travel worldwide to present health and nutrition seminars.Melissa Hartwig, CISSN, RKC,  is a certified sports nutritionist and RKC-certified kettlebell instructor who specializes in helping people change their relationship with food and create lifelong, healthy habits. She shares resources, writes articles, and provides support to more than one million people a month through the Whole30 website (whole30.com).

Dallas Hartwig, MS, PT, CISSN, is a certified sports nutritionist, licensed physical therapist, and functional medicine practitioner who specializes in addressing the underlying causes of disease using a systems-oriented approach. He co-owned and operated a strength and conditioning facility until founding the online community Whole9 (whole9life.com) with his wife, Melissa, in November 2009. They live in Salt Lake City, Utah, and travel worldwide to present health and nutrition seminars.Melissa Hartwig, CISSN, RKC,  is a certified sports nutritionist and RKC-certified kettlebell instructor who specializes in helping people change their relationship with food and create lifelong, healthy habits. She shares resources, writes articles, and provides support to more than one million people a month through the Whole30 website (whole30.com).

Dallas Hartwig, MS, PT, CISSN, is a certified sports nutritionist, licensed physical therapist, and functional medicine practitioner who specializes in addressing the underlying causes of disease using a systems-oriented approach. He co-owned and operated a strength and conditioning facility until founding the online community Whole9 (whole9life.com) with his wife, Melissa, in November 2009. They live in Salt Lake City, Utah, and travel worldwide to present health and nutrition seminars.Melissa Hartwig, CISSN, RKC,  is a certified sports nutritionist and RKC-certified kettlebell instructor who specializes in helping people change their relationship with food and create lifelong, healthy habits. She shares resources, writes articles, and provides support to more than one million people a month through the Whole30 website (whole30.com).