it hurts me.
I haven't figured out why, when the road turns slightly south, it gets very hard to maintain the power level I'm working at.
I've also noticed, when the road goes up it's very 'easy' to maintain a steady, higher power number.
I have a road that I use to do anything 5-10 minutes in length. I hate the parts on that road that go downhill. It's only a slight downhill but I always have to 'recover' from those when I hit the flat and start pacing it again.
My cadence will increase on the downhills until I grab enough gears that I'm back to optimal but it is still an effort to try and stay in the range until it flattens out or goes up.
Different muscles in use here? What's the explanation?