What bad habits in daily life will affect your health?

There are many bad habits in daily life that will affect your health, such as skipping breakfast, loosening your belt after meals, sleeping immediately after meals, eating sugar on an empty stomach, eating salty food, growing a beard, crossing your legs, rubbing your eyes with your hands, taking a nap at your desk, sleeping on your stomach, not washing your face before going to bed, not brushing your teeth before going to bed, sleeping late, taking a long hot bath, gambling, drinking, smoking, staying up late and so on.