For cardio, I have to force myself to do a 1.4 mile jog a few days out of the week and I hate it.  But I know it's healthy to get that heart rate up and have been doing it for years, with pure hatred.  For the longest time I thought that cardio was all I needed to keep my strength and body in fit shape.  That was so wrong.  I started lifting and  LOVE it.  I wish there was an explanation as to why I hate cardio and love hitting the weights?