Lightness of the body may be caused by physiological factors, but does not exclude pathological factors, such as hypertension, cervical spondylosis, etc.. You should consult a doctor in time to find out the reason. 1. Physiological factors: poor rest at night, such as staying up all night, this situation will make the brain in a state of extreme fatigue, which will lead to early morning wake up body light, usually accompanied by a feeling of drowsiness. 2. Pathological factors (1) Hypertension: If there is high blood pressure, because of some external stimuli, the blood pressure suddenly rises, the body will appear light and fluffy symptoms, accompanied by dizziness, head swelling and so on. (2) Cervical spondylosis: This symptom also occurs when cervical spondylosis occurs because the cervical intervertebral discs compress the cervical nerves or blood vessels, which leads to insufficient blood supply to the brain and the symptom of lightness in the body. These are only some of the common causes. If you are experiencing symptoms of lightness, you should go to a regular hospital in a timely manner, and do not blindly deal with them on your own to avoid delays in your condition.