Arnold The Golden Six

While Arnold Schwarzenegger was, at times, the definitive training split king, he started his career on a full-body routine and he still recommends it for new trainees. The program was nicknamed "The Golden Six". This is a complete full-body approach that doesn't leave any major muscle groups unattended. It is a great start for anyone interested in building muscle. It's also a great old-school plan to get you back to basics when you feel like simplifying things or can only make it to the gym three days per week.