Sounds like you and some others above dont know what you are talking about, or any experience with this style of exericses. So u think bodybuilding can only be done through weightlifting? These are bodweight exercises that target the chest and build muscle. Also this is bodybuilding not just conditioning.... Its muscle building exercises done in sets, only its not weights being used. Once again.... i will say it.. the major muscle being focused on in all the exercises is the chest, and the core is worked too. Looks like alot of ignorant and unexperienced people in this forum.