The concept of full body workouts have worked extremely well for thousands of men over the years. This brief and to the point workout protocol can insure steady gains, as opposed to the 6 day a week marathon training of some. That, at times, may be just a hit or miss effort. Guy's who look the same, not getting much stronger or adding muscle mass, after years of hard training might prove to be a prime example.
Select three, or at the most four, basic compound movements only. Mistake people make is adding too many exercises to this type program. If anyone can't get by without adding arm exercises, than thrown in a couple sets of heavy cheat BB curls and close grip (6 to 8 inches) benches. 3x7-10 reps seems to do the trick for any compound movement.. Of course the tied and true 5x5's is another exceptional way to use a full body workout.
I, and many, many others, have used squats, pulls & benches in successful workouts. Have also used squats, DL's & presses in the same workout. (one of my favorites was Hack BB squats, power cleans & dips..weighted). Some Olympic lifters have used like programs. If only time for one exercise, than do the squat clean and jerk press. A ultimate mass and power builder..and a full body wokout.
Marvin Eder was one of the strongest BB's of past or present. His overhead pressing, dipping (extreme weight added) and heavy curling were unbelievable. But even without any formal training at all, he would be classified as a natural born strong man. People have a hard time today understanding that. Thinking that you can't get anywhere without chemical help. Not true at all.
Check out some of the really, really old timer strongmen (before drugs) of the 18th, 19th & 20th century. Records were kept very carefully back then. I have two cousins that both benched over 400+ as a regular part of their workouts for football. There were juniors & seniors (17 & 18 years) in high school at the time. During off season they hardly trained at all. Just born strong, that's all. Good Luck.