Yes, Virginia, jogging is good for your health, but it may be possible in the case of jogging to have too much of a good thing. A new Danish study that followed 1,100 healthy joggers and 413 sedentary people for more than 12 years suggests that people least likely to die are those who jog 1 to 2.4 hours per week, with no more than three running days per week.  HealthDay reports that the study found that strenuous joggers, –those who jogged at the fastest pace, were as likely to die during that time period as the sedentary non-joggers. Wait, there’s more, and it’s confusing: HealthDay also mentions another study, conducted at Iowa State University and involving 13,000 runners, that found a lower risk of death for joggers with the highest running time and frequency — nearly three hours a week and at least six times a week — compared with non-runners. What does it all mean? More research is needed.