Push-up targets refer to the muscles that are worked when doing a push-up. The two main muscles targeted are the pectoralis major and the pectoralis minor, which are commonly referred to as the 'pecs'. The pectoralis major is a large, fan-shaped muscle located in the chest, while the pectoralis minor is a smaller, triangular muscle located beneath the pectoralis major. Push-ups are an effective exercise for strengthening these muscles, as well as the triceps and shoulders.