I just biked 22miles, and at times my 74 yr old male friend (I’m 65) and I were at 19 mph. I often bike, but it doesn’t do much for osteoporosis, so I also walk a mile a day, up hills. I also swim some on summer. I have a 3.9 AAA by ct scan. I have BP problem. Often 148/95 when I wake- then I take pill of 10.mg. (beta blocker , I believe) and it gets down to 130-120 over 90. I think it’s congenital. But I exacerbate by drinking alcohol at night esp. in summer as I’m social with friends and enjoy up to three beers. I know I should stop that but I cut out my salt and I eat plenty of vegetables less red meat lots of beet juice etc. micro greens etc. my weight is the same as in high school 120 pounds. I’m trying to keep my cardiovascular strength. The the pump that is the heart is well tuned, Even if the tube exiting isn’t the best.