Sarka-Jonae Miller has been a freelance writer and editor since 2003. She was a personal trainer for four years with certifications from AFAA and NASM. Miller also worked at 24 Hour Fitness, LA Fitness and as a mobile trainer. Her career in the fitness industry begin in 2000 as a martial arts, yoga and group exercise instructor. She graduated cum laude from Syracuse University.
Working the three different layers of abdominal muscles requires various exercises.
Photo Credit: Comstock/Comstock/Getty Images
Obtaining toned abs requires more than just traditional situps. There are three layers to the abdomen and working out each muscle group will result in flat abs.
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