As it stands, the barbell is hands down the best choice for building muscle and strength as a total body exercise.
6
There's nothing that can compare to squats, deadlifts, bench presses, and bent rows in terms of pure muscle stimulation.
7
The barbell is a popular piece of equipment for people who exercise and perform other physical activities. As old school as you can get, it is one of the most effective ways to gain strength and build muscle.