The answer is Pitting edema. Standing or sitting for drawn out stretches of time especially in a hot climate can make abundance liquid gather in feet, lower legs, and lower legs. Low protein levels in the blood caused by lack of healthy sustenance, kidney and liver ailment can likewise cause edema.
For a few people, setting edema can be an indication of a more genuine medical problem, for example, Blood clump: One of these in a profound vein can cause edema in the area of the coagulation.
I can't remember the branch, I literally just took psych last year too, but perspective would be because some people have outside influences affecting the parts of the brain that can trigger depression; sadness .
