Your chest muscles are composed of the pectoralis major and minor. The pectoralis major (see illustration) is the bigger chest muscle and travels from the collar bone to the sternum, attaching to the upper arm. The purpose of this muscle is flexion and adduction of the shoulder as well as inward shoulder rotation. The pectoralis minor is a small triangular muscle located under the pectoralis major and also helps with shoulder flexion, adduction and rotation.
You can perform chest exercises up to 3 non-consecutive days a week. However, if you're lifting heavy weights (enough that you can only complete 6 to 8 repetitions) you'll need at least 2-3 days of rest before you perform the exercises again. For this reason, you may only work your chest once or twice a week. If you're goal is to tone your muscles, you'll want to stick with one to three sets of 12-16 repetitions and at least one day of rest before you perform the exercises again.
here are some of my chest training:
Chest flies 12 reps
diamond push up 12 reps
chest presses 12 reps
perform each of this exercise with no resting in between exercise, but rest 60-90 second in between sets and perform for 6-8 sets . TRAIN IT!