Injuries when you are older are harder to recover from. You have to keep moving, but don't overdo it. I've had 4 hamstring tears and 3 desiccated Lower back discs (From lifting Ford V8 engines when young) which have, by doing carefully programmed exercises, become freely Moving. Specific exercises keep the Joints firmer and less likely to be damaged. Be careful HOW you LIFT things. Prolonged effort gets the Heart working It is another "Muscle" after all but you need a check out before heavy exercise. I've not been in favour of doing stress ECG's. It's like testing a Bridge by driving a BIG truck over it. There are safer tests that can be done, and diet and stress avoidance considerations etc How much Plaque is in your Carotid arteries? Nev