It may be argued which group is the toughest out there. One may say that triathletes are the toughest. Someone may respond with another answer. Either way, a study now shows that in fact, triathletes are tougher than any other group of people. They can withstand pain longer than anyone else. Here is an article which discusses the study and its findings. The best part is that the lovely and talented pro triathlete, model, and actress Jenna Parker is quoted in the piece. Enjoy!!