The monday
There is no man who has not complained, at least once in his life, that it's Monday. This beginning of the week, when no grass grows, nor even the smiles not come.
This day there are 20% more heart attacks on the face of the rest of the week. Among the causes, there is stress and increased tension due to the return to work.
Statistics say most of the suicides happen on the first day of the week. It is a bad day, but not to start with the left.