Forking is a symptom of pain in the chest, ribs and abdominal area. Breathlessness is caused by insufficient preparation before exercise, lack of rhythmic breathing during exercise, or too cold weather and heavy sweating. 1. Insufficient preparatory activities before exercise: If you don’t do enough preparatory activities before exercise, you may be in a state of tension during strenuous exercise, so that the internal organs can’t immediately satisfy the oxygen needed for muscular activities, which will lead to the emergence of breathlessness. 2. Breathing without rhythm during exercise: poorly adjusted breathing rhythm during exercise can lead to too much air inhalation at once, thus resulting in breathlessness. It is best to link the breathing with the pace, after mastering the regular breathing, you will avoid the emergence of the fork in the air. 3. Cold weather, sweating: If the weather is too cold and sweating a lot may also cause breathlessness, mainly due to the body’s chlorine and potassium content is reduced, thus causing the symptoms, which belongs to the allergic breathlessness. In the usual exercise must pay attention to do a good job of warming up activities, try to breathe through the nose during exercise, do not suddenly increase the amount of exercise, can be through the way of massage to promote blood circulation in the body, so as to reduce the phenomenon of pain.