Originally Posted by
deacon mark
Bike riding should not be any worse than walking. Your symptoms suggest you need a better fit and make sure you are spinning the pedals not bearing down.
Originally Posted by
Shimagnolo
What is your cadence?
I had knee problems before I learned to stop mashing at 60rpm, and taught myself to spin at 85-105rpm.
Good questions. I'm paying attention to cadence now and doing a better job of anticipating shifting to keep the cadence up. I don't have a computer but I'm keeping it higher than once per second, I'd guess 80rpm most of the time.
That first week though .. by the time I got to the top of the hills I was struggling, wavering, trying not to fall over. Less than 60rpm I'm sure, like maybe down around 30 at the end, even in the lowest gear. I may have done some things I shouldn't have done.

It's a used bike and I didn't realize at the time but a brake was rubbing. Live and learn.