There’s a reason it’s called International Chest Day. Sliding weight plates onto the bar is an effective, powerful way to start your lifting week off right. Two tips for training your chest are that you can do it any day you want, and that you don't need free weights or cables.
The push-up is an often-overlooked exercise in the quest for a strong and muscular chest. The push-up is an effective exercise for strengthening the chest and shoulders, and can lead to increased bench press numbers.
Even if you are already in great shape, doing chest exercises with your body weight can help you stay at the top of your pressing game. If you can't find a weight bench on Mondays or you just want to get in a good chest-building session in between work meetings, then you need to add some bodyweight chest exercises to your training toolbox.
Why Work Out Your Inner Chest?
The term “guy cleavage” is used to describe the line between a man's pecs that is often seen on bodybuilders and physique competitors. Most men would like to have this line, as it is seen as attractive. The streaks on the chest make it look more appealing and show that the person is a dedicated gym-goer, not just someone who pretends to be.
However, training a particular area of any muscle is controversial within the strength and conditioning community. John Rusin, D.P.T., C.S.C.S., says that when a muscle fiber is contracted, it is either fully contracted or not at all. The same nerves that control the inner part of the pec muscles also activate all the other regions of the chest muscles, including the upper, lower, and outer pecs. The entire muscle contracts as one unit.” According to the science, you can't isolate one part of a muscle because the entire muscle contracts as one unit. There are ways to target the inner pec fibers to build the area.
According to Rusin, if you focus your mind on contracting a specific area of muscle, and use exercises that target those muscle contractions, you can potentially develop that muscle more.
Anatomy of the Inner Chest
There is only one pair of muscles that work the inner chest and they are called the pectoralis majors. The pectoralis major muscles are the large muscles located in the chest that attach to the sternum. Each side has a second pec muscle called the pectoralis minor, but it is smaller and doesn't reach the sternum, so it is not necessary to target when working on the inner chest.
There is a vertical column formed by the space between where the two pec majors attach at the sternum. To achieve a well-defined inner chest, the attachment points need to be well-built so that each pec major is clearly separated from the other and looks like it has been carved out of granite. To have striations appear, you will need to have low body fat.
There are four anatomical motions that the pec major performs:
- Flexion of the humerus (raising the arm in front of your body). This is accomplished by the clavicular head of the pec muscle—the pec fibers that attach to the collarbone.
- Extension of the humerus (lowering the arm down to your side). This is done by the sternocostal head—the fibers that attach to the sternum.
- Horizontal adduction of the humerus (moving the arm across the front of the body). Both the clavicular and steroncostal heads work together to move the arms in a hugging motion.
- Internal rotation of the humerus (rotating the arm in toward the midline of the body). Again, both muscle heads work together here.
In the gym, you can train all of these movements by using two types of exercises: presses, which involve pushing a weight up from your chest, and flyes, which involve holding weights out to your sides and then bringing them back in. Pressing exercises, which are usually done with either a barbell or dumbbells, are considered some of the most effective chest exercises because they provide the most benefits for your training. Compound exercises, such as presses, allow you to lift heavier weights and target more muscles. Rusin says that the most effective way to target the inner pecs is by doing lifts that emphasize horizontal adduction. In order to strengthen the inner muscles, you cannot just rely on standard exercises like the bench press, dumbbell bench press, and regular pushups. To hit the inner pecs, you need to do horizontal adduction, which is an action that most people never train properly.