Hidden pain on both sides of chest in men may be caused by muscle strain, costochondritis, pleurisy and other reasons. 1. Muscle strain: after strenuous exercise or overexertion, men may suffer from muscle strain and have vague pain on both sides of the chest, which can be relieved after resting. 2. Costochondritis: when men suffer from costochondritis, they may feel vague pain in the ribs on both sides of the chest. 3. Pleurisy: lung inflammation, autoimmune disease, malignant tumors and so on can cause pleurisy, due to the stimulation of inflammation, may appear on both sides of the chest vague pain symptoms. It is recommended that men with vague pain on both sides of the chest go to a regular hospital in time to clarify the cause of the disease and standardize the treatment under the guidance of the doctor, so as not to delay the disease and bring adverse effects on the body.