The benefits of Peripheral Heart Action training are cardio endurance and conditioning because of the minimal rest allowed between sets. Muscle gain will be minimal because you're training in higher heart rates, which tends to burn muscle slightly over time. But it's a great intense cardiovascular workout to throw into your program for a change.
See this week's Brides Made Fit podcast for a killer circuit. I show you four movements that you're going to repeat five times each, with little rest: