They're the mantras of all fitness classes, "Tighten those abs!" "Engage your core!" but do you actually know what muscles you're engaging? While "abs" and "core" tend to be used synonymously, the ...

Compound exercises like squats and deadlifts do well to target your abs while working out. If you want to focus on additional core work, consider adding up to three ab workouts per week. Doing ab and ...