I’m not familiar with the medical evidence, but… why would exercise instigate a cardiac event when anxious? Perhaps if having a panic attack it would be unwise, but I feel like exercise can serve as a distraction or outlet to anxiety and be beneficial on the whole.

Please explain what you mean by spun up.

If we are talking about emotional stress coupled with a slight increase in heart rate, I would not be concerned about doing exercise. Quite the opposite -- I think a quick jog around the block can do wonders.

The key is to be able to do the exercise without bringing additional stress.