A muscle training method, comprising the following steps that are repeated alternately to perform training of a muscle of a user: a pressuring and exercise step of winding a belt around at least one of the arms of the user and applying specific pressure thereto so as to restrict blood circulation of the muscle of the user without stopping the blood circulation, and asking the user to perform load-applied exercise to apply load of specific weight to the muscle of the user; and an exercise stopping step of asking the user to stop the load-applied exercise while continuously applying the specific pressure to the user, wherein the load-applied exercise is a one-arm curl exercise which is respectively performed by the arm around which the belt is wound, wherein the specific weight is set at 20 to 30% of the maximum weight necessary for the user to exert maximum muscle force, wherein the pressuring and exercise step is performed three times or more, and the number of the load-applied exercises performed in the second pressuring and exercise step is set at 1/2 or less of the number of the load-applied exercises performed in the first pressuring and exercise step, and the number of the load-applied exercises performed in the third pressuring and exercise step is set at 1/2 or less of the number of the load-applied exercises performed in the second pressuring and exercise step, wherein the number of the load-applied exercises performed in the first pressuring and exercise step is set at 25 to 30, wherein, in the exercise stopping step, stopping duration of the load-applied exercise is set at 10 to 20 seconds, wherein the method comprises a pressure setting step to set the specific pressure, wherein the pressure setting step comprises attachment step, in which the belt is wound around at least one of the arms of the user for attachment with specific attachment pressure, pressurization step, in which pressure higher than the specific attachment pressure is applied to the user, and depressurization step, in which the pressure applied in the pressurization step is removed to return to the specific attachment pressure, and wherein the pressurization step and the depressurization step are performed alternately a plurality of times while setting a value of pressure in a pressurization step larger than a value of pressure in a preceding pressurization step, and the pressure applied when color of a palm of the user turns red or reddish brown in the pressurization step is set as the specific pressure. a pressuring and exercise step of winding a belt around at least one of the arms of the user and applying specific pressure thereto so as to restrict blood circulation of the muscle of the user without stopping the blood circulation, and asking the user to perform load-applied exercise to apply load of specific weight to the muscle of the user; and an exercise stopping step of asking the user to stop the load-applied exercise while continuously applying the specific pressure to the user, wherein the load-applied exercise is a one-arm curl exercise which is respectively performed by the arm around which the belt is wound, wherein the specific weight is set at 20 to 30% of the maximum weight necessary for the user to exert maximum muscle force, wherein the pressuring and exercise step is performed three times or more, and the number of the load-applied exercises performed in the second pressuring and exercise step is set at 1/2 or less of the number of the load-applied exercises performed in the first pressuring and exercise step, and the number of the load-applied exercises performed in the third pressuring and exercise step is set at 1/2 or less of the number of the load-applied exercises performed in the second pressuring and exercise step, wherein the number of the load-applied exercises performed in the first pressuring and exercise step is set at 25 to 30, wherein, in the exercise stopping step, stopping duration of the load-applied exercise is set at 10 to 20 seconds, wherein the method comprises a pressure setting step to set the specific pressure, wherein the pressure setting step comprises attachment step, in which the belt is wound around at least one of the arms of the user for attachment with specific attachment pressure, pressurization step, in which pressure higher than the specific attachment pressure is applied to the user, and depressurization step, in which the pressure applied in the pressurization step is removed to return to the specific attachment pressure, and wherein the pressurization step and the depressurization step are performed alternately a plurality of times while setting a value of pressure in a pressurization step larger than a value of pressure in a preceding pressurization step, and the pressure applied when color of a palm of the user turns red or reddish brown in the pressurization step is set as the specific pressure.