A systolic blood pressure of 138 mmHg is a high normal value, and according to the classification and definition of blood pressure levels in China, normal blood pressure is a systolic blood pressure of <120 mmHg and a diastolic blood pressure of <80 mmHg, and a high normal value is a systolic blood pressure of 120-139 mmHg and/or a diastolic blood pressure of 80-89 mmHg. Lifestyle interventions are needed to prevent and delay the onset of high blood pressure, and healthy lifestyles include reducing sodium intake and increasing potassium intake. Healthy lifestyle includes reducing sodium intake, increasing potassium intake, reasonable diet, diversified food, balanced nutrition, weight control (maintaining appropriate weight), moderate exercise, quitting smoking and limiting alcohol consumption, maintaining psychological balance, avoiding prolonged stress, and getting enough sleep. Blood pressure can be lowered by the above healthy lifestyle, which can reduce the normal high blood pressure of 138mmHg to normal blood pressure, i.e. blood pressure <120mmHg.