Always trust your body first and foremost. Even if it may go against conventional wisdom, experiment until you find what works for you. The big caveat is trying to control for other factors and not getting fooled by coincidental changes, which isn’t always easy given the number of factors which can impact performance.
Not arguing against conventional wisdom, btw. It’s the logical starting point. But when you can’t determine what the issue is, you have to put everything on the table.
Complaint: I have to drive a good 15-20mins to get to any remotely hilly locations. Hell, I’d even settle for a single moderately inclined road around here. There’s literally nothing within a few miles.
Confession: When short on time or too lazy to drive further, I’ve used cloverleaf interchanges as a means of getting some needed elevation gain in.
Uncomplaint: I never knew those things were called cloverleaf interchanges. So that’s fun.