Hey, Bobbi, here's a nice article that talks about the basics of the soft plaque issues. I'm sure that if your doc was even remotely concerned in any urgent way, you'd have been called in, cold or not.

http://ihealthbulletin.com/blog/2008...nary-arteries/

One exercise that is a surprisingly good workout is singing. It doesn't matter if you can't carry a tune in a bucket, working your vocal and respiratory system works an amazing amount of energy through you. Shoot, even playing a wind instrument is good exercise with zero physical impact on your joints, etc. I recommend the harmonica.