There are many reasons that lead to thick legs and thin upper body, many people feel their upper body thin but thick legs, the phenomenon of thick legs and thin upper body is mainly because often stay up late, often eat spicy food, often sedentary caused. Often stay up late most of the toxins and garbage in the body is not discharged in a timely manner will cause toxins and fat accumulation in the legs, resulting in thick legs. Often eat spicy food is also prone to the upper body thin and thick legs, many people like to eat spicy food but to control in a certain range, beyond this range will lead to swelling of the legs, which is also one of the reasons why the legs are thick. In addition, often sedentary is also one of the reasons for the phenomenon of the upper body thin, thick legs, often sitting will cause fat can not be consumed in the legs to accumulate obesity in the legs, resulting in thick legs, upper body thin.