If the axillary muscles are throbbing, the main consideration may be whether there is overexertion, causing local muscle spasm, twitching, or muscle tremor response. It is also important to consider whether there is a functional disorder of the muscles and nerves that govern this area. If this happens, it is recommended that you try not to participate in strenuous sports in the near future, pay attention to more rest and avoid too much pressure on the muscles. In addition, you can use hot towels to warm the muscles in the armpits to promote blood circulation, and you can also use the palm of your hand to gently pat the throbbing muscles to relieve the symptoms. At the same time, eat more calcium-containing foods, such as nuts, milk and eggs, and then walk around outdoors and get some sunshine to observe the change of symptoms. If the throbbing continues, it is recommended to go to the hospital for further examination to rule out organic diseases.