Whether or not you can run in hyperthyroidism and hypothyroidism depends on the severity of your condition. You can run moderately when your condition is stable and there are no complications, but you are not recommended to run when you are in the onset of hyperthyroidism. 1. When hyperthyroidism is at its onset, the basal metabolic rate increases significantly, and some patients have faster heart rates even at rest, so running at this time will aggravate the burden on the heart, leading to arrhythmia, chest tightness and other discomforts. When hypothyroidism develops, there will be low metabolic symptoms such as fatigue, if accompanied by anemia and other complications, running may aggravate the condition. 2. If hyperthyroidism and hypothyroidism are in a stable period after treatment, and thyroid function is normal, you can run moderately, but not too strenuously, so as not to aggravate the burden on the heart and physical exertion, and usually will not affect the condition. It is recommended that hyperthyroidism and hypothyroidism go to the endocrinology department of regular hospitals to consult a professional doctor after exercise, so as not to delay the condition or lead to adverse reactions.