One thing that has been amazing is the effect of warming up in deferring or preventing angina pain on exertion. Six weeks ago, I wouldn't have believed I could have endured a challenging, for me, exercise programme. The change in meds has helped. But warming up has made an enormous difference. I've only had angina pain once when exercising but have had it recently when just walking a few yards to the shops on a number of occasions. I'm going to warm up more - whenever and wherever possible.