So what's my excuse? Seems like every winter I gain 10 lbs, Now in the process of working it back off. This doesn't seem to effect my HR but it does effect my speed and enjoyment. I think we all have this problem no matter what our gender. I think it more depends on the type of metabolism and body makeup. Not being an athlete and having that kind of build or body type I have to struggle hard for any gains and the more I gain the harder I have to work to sustain them. Sometimes I turn my head and slack up and then I have to start all over again.