I am no expert on heart rates but I have some medical issues. I had a chat with my GP before I started, she was very encouraging and gave me some warning signs I personally had to look out for. Maybe a trip to your GP would put your mind at rest before starting out.
I'm 3 years younger than you and have completed C25K with no health problems. I've been lucky and not picked up any injuries or illnesses on the way so age isn't necessarily a risk. I don't know anything about heart rates but I presume if you feel OK you probably are OK. Good luck - keep the flag flying for us oldies!
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