A lot of men say that becoming dads gave them something to live for. That attitude shows up in a number of studies that show that fathers are less likely to get involved in criminal activity, and that they often give up unhealthy habits (like smoking) and risky behavior (like bungee jumping or running red lights).
But for a lot of dads, the stress of trying to balance work and family really takes a toll. On average, men put on an average of more than 20 pounds after becoming fathers. And a just-published study found that 60 percent of fathers are so overweight that they may be jeopardizing their health.