This program is for a duration of four weeks and uses antagonist supersets.
Antagonist supersets are a method in which you pair up opposing muscles groups like chest and back. This style of training is time efficient and great for muscular balance and strength development as alternating supersets allows for faster recovery per muscle group.
Antagonist supersets were first made popular by the legend himself Arnold Schwarzenegger back in the 1970s. He used this style of training to build his champion physique, which won him 7 Mr Olympia titles.