Just some background, my boxer will be 6 this month. Prior to getting pregnant with my DS, Charlie was my jogging/walking buddy. We exercised almost every day. I was really sick with this pregnancy, so I stopped walking him as much.As a result, he put on some weight. When DS was 6 mo and could ride in the jogging stroller, I started the couch to 5K program. June is pretty hot here and Charlie was really struggling, so I stopped taking him. Now that it's cooling off some, I tried taking him jogging again. I did the first day of the couch to 5K program which isn't really that intense. The poor dog was panting and literally dragging behind me on the last few intervals. I figured maybe it was too much too soon, so I just tried walking with him today. We walked about 2 miles at a decent rate. Poor dog was panting pretty hard and 30 minutes later is still laying on the tile floor panting. Should I keep taking him with me to get him back into shape or just leave him behind while I exercise? I know he's still overweight, but I dont want to give him a heart attack or hurt him either!