'm feeling a little under the weather, I find getting out for a gentle run helps. I pay close attention to my heart rate, keep the effort EASY, and run for 30-35 minutes max. It may be psychological, but I'm sure the lift my mood gets from this helps
that I'm a tiny person. My blood pressure is very low, and the walking helps with my swollen feet. So I think trying to keep up some sort of activity is invaluable. General advice for us mere mortals is reduce by 50 per cent and keep your heart rate below