Sun exposure does not cause an increase in blood pressure, and proper sun exposure helps to lower blood pressure and reduce the risk of cardiovascular disease. Studies have shown that the sun’s ultraviolet rays can release blood pressure-lowering compounds that help lower blood pressure. Activity increases after sun exposure, mood becomes cheerful, which helps relax and relieve stress, and increased exercise helps lose weight, leading to lower blood pressure. It is best to avoid sun exposure from 10 a.m. to 3 p.m., when UV rays are too strong and can increase skin damage, and people with high blood pressure can sunbathe in the morning or late afternoon.