Why does warmth make you feel tired?

W arm th can make you feel tired for a few reasons . One possibility is that being in a warm environment can cause your blood vessels to dil ate , which can lead to a drop in blood pressure and make you feel light head ed or d iz zy . This can be especially pron ounced if you are not used to being in warm environments or if you are de h yd r ated . \n \n An other possibility is that being in a warm environment can cause your body to relax and become more sed ent ary , which can make you feel tired . This is because being in a warm environment can cause your mus cles to relax and your body to become more relax ed , which can make it harder to stay alert and focused . \n \n Fin ally , being in a warm environment can cause your body to release a h orm one called mel aton in , which helps reg ulate sleep . Mel aton in production is typically increased in the evening when it ' s dark , and being in a warm environment can trigger the production of mel aton in , making you feel more tired . \n \n It ' s worth not ing that these effects can vary from person to person and may depend on a variety of factors , including your overall health , the temperature of the environment , and your personal prefer ences . </s>