People with coronary heart disease can soak their feet, but it is recommended not to do so during an angina attack. When soaking feet, the high water temperature causes the capillaries in the lower limbs to dilate, increasing blood supply to the lower limbs, which can correspondingly reduce the blood supply to the heart, easily leading to myocardial ischemia and angina attacks. Additionally, the soaking should not be too long, and the water temperature should not be too high. It is suggested that a 10-minute soak is appropriate, and a water temperature of around 37 to 38 degrees Celsius is advisable. Too high a temperature is not beneficial for patients with coronary heart disease.