Originally Posted by prj71

It does?

Show your work.

I was on 100 mile solstice ride last weekend with a group of people. I'm 49 years old. At mile ~70 a 65 year old lady passed me on a long uphill on her e-bike. I reached the top with slightly burning legs and lungs and slowed it down a little to recover. Meanwhile she kept going and wasn't even breathing hard. I doubt she got much exercise at all during that ride.