There are many factors to consider. First, you may seldom exercise, and your body can't stand it for a while. Second, sometimes chest enlargement is done in equipment training, which is easy to make the body vibrate in a large area and has stretching pain under the armpit. Third, it is the problem of qi. People with low vitality seldom exercise. Exercise will expand your body for a while, and your trachea will be congested and dilated for a while, which will also make you feel heart pain. This phenomenon still needs more exercise, blood will flow in the body, and the pressure on the heart will be strengthened.

Of course, it takes a long time to practice. If you don't have time, you can try. When washing your face in the morning, fill it with water and practice holding your breath 1 minute. This will speed up your blood flow, dilate your trachea and strengthen your heart function, but it will be effective if you practice regularly. Pay more attention to starting from your own system when training equipment!