Erin Kreitz Shirey

ErinKreitz Shirey, owner of Power Fitness PDX, is a nationally-awarded personal trainer and fitness coach, a Brooks Run Happy fitness blogger, a health and fitness editor for, and the creator of the 21-Day Challenge app. When not teaching bootcamps, presenting, or training for triathlons, Erin can be found biking with her family, while periodically stopping to make her kids laugh by doing the running man. For more information, check out You can also follow Erin at Twitter @powerfitness.