Sorry it's been several days since the last update.  I will probably update once a week now since nothing is really happening outside of the normal healing. We are 4 weeks out now.  He feels great, pain is almost nothing, walking 3-4 miles a day, physical therapy twice a week.  The hard part is just learning to sit still and don't do anything while the sternum bone heals which is 6-8 weeks.  If he does any damage to that there isn't anything they can do to fix it and he'll have troubles the rest of his life.  So taking 2 months off right now is a small sacrifice.