Some days in the last few weeks were feeling like summer weather. The temperature was hovering in the 30 degrees and the humidity was high. The high humidity in the atmosphere, which is the weight of the air on the body, causes a low atmospheric pressure and swelling even in the population without lymphoedema and make you feel tired and lethargic. The heat has a vasodilating effect on the blood vessels, meaning that the blood vessels dilate allowing more fluid to leak in the