Smart Muscles has a vast selection of exercises which are used throughout our workout plans. They are categorized by the muscles which they affect (primary and secondary), as well as the equipment required. To get started, choose a muscle group in the muscle list. We realize that not everybody has the same fitness goals and that is why all of our workout programs are custom made for you using the variant instructions.

References:

www.freetrainers.com
www.workoutlabs.com
www.bodybuilding.com
www.vigorworkouts.com