Researchers have found that avoiding grief can sometimes hasten recovery. George Bonanno of Columbia University found that those who repressed grief were psychologically and physically healthier six and 14 months after their losses than others who grieved more. "Although that's a surprising discovery, it's not to be confused with denial." Recovery periods can vary widely. While some people recover in a year, there are those who find the second year to be much worse. When male and female grievers are compared, there are patterns and differences. A University of Kentucky survey found that men grieve in a way that does not seem like grieving. While women talk and cry, men think and act. Men often mourn the death of their fathers by taking action. For example, when a 46-year-old man lost his father, he learned to practice martial arts in the morning as his father had done.