What is the secret behind becoming the most decorated GAA player in history? Is there a magic exercise to perform in the gym, an extravagant diet to follow or an obscure practice to take part in?Only one person knows the answer: Rena Buckley who, in recent weeks – after Cork beat Kilkenny in the All-Ireland senior camogie final – became the most accomplished GAA player ever, winning 18 All-Ireland medals.