If young people have symptoms of feeling weak in one side of their legs and arms, it may be caused by insufficient exercise, but there may also be spinal cord compression, central neuropathy and other causes. When treating this group of people, the first thing to do is to clarify the cause of the disease, and then carry out targeted treatment.1, insufficient exercise: some young people may not exercise for a long time due to their own habits, resulting in the weaker side of the legs and arms feel weak. For example, left-handed young people, at this time may appear the right side of the legs and arms feel weak symptoms. In this case, it is necessary to instruct them to carry out functional exercises, such as running exercises, and then one-legged rope skipping, push-ups, pull-ups and other exercises; 2, spinal cord compression: these patients may be due to the existence of spinal cord cervical spondylosis, resulting in one side of the spinal cord compression, which will cause the same side of the legs and arms feel weak. In terms of treatment, mild cases can be treated conservatively, such as bed rest, wearing a neck brace, or acupuncture and physical therapy. If the condition cannot be relieved, surgery may be needed, such as anterior approach surgery, posterior approach surgery, anterior-posterior approach combined surgery, etc. 3. Central neuropathy: Some patients may have cerebrovascular malformation, which may cause ischemia in part of the brain, or intracranial occupancy, such as glioma, which may lead to compression of the related nerve centers of the brain, and the symptom of weakness in one side of the leg and arm may occur. For such patients, it is necessary to make a clear diagnosis in time and formulate a reasonable treatment plan, for example, it is necessary to surgically remove the tumor lesion, or to unblock or close the corresponding blood vessels through interventional surgery.