Because we're looking to create functional strength and size, we'll be doing lots of full - body routines with compound exercises that work multiple muscle groups at once. (nerdfitness.com)
These exercises work multiple muscles groups at the same time and the muscles can be stressed more when they are working together as one unit as opposed to working them individually in isolation. (getthisstrength.com)
The rings can be used to target multiple muscle groups in the upper and lower body due to the wide range of exercise variations that can be performed with the hands or feet. (onnit.com)