Dr. Richard Stephens, a lecturer at Keele University in England, authored a study that showed pain is more manageable with cursing. 
Participants in the study were first asked to say five words they might say when they've been hit on the thumb with a hammer. One came up with five that weren't curse words. The rest easily 4-lettered it up.
Then, they immersed their hands in 41-degree water while repeating the first curse word on their respective lists. Then they did it again, this time using a neutral word to describe a table. This would serve as the constant in the experiment.
During this experiment, the researchers measured their respective heart rates and the time they could keep their hands in the water. Swearing allowed them to keep their hands in longer and also increased heart rate and decreased perceived pain.
Stephens admitted that the study only covered one type of pain. But, he insisted, while other pains were different on a physiological level, the findings would probably apply there as well. The report asserted that swearing causes a "fight-or-flight response" which probably canceled the connection between a fear of pain and the feeling of pain and possibly ended up lessening the sensation.
But for some people, the immediate feeling after cursing is guilt which might be responsible for damage to your immune system. Dr Geoff Lowe, a chartered psychologist from the University of Hull, directed a study saying that people would be healthier if they relaxed and enjoyed their "sins" (not the harmful ones, though).
Lowe explains that a more positive outlook and an ability to enjoy simple pleasures, rather than regretting them, will allow a person to live healthier and actually maximize life's happiness. He added that if we stopped to smell the flowers occasionally, we'd live healthier.
So, f**k the pain and f**k the guilt and live a long life.
