Trainer Sessions are Harder than Intervals

Yeah, that's right I said it. Heck, intervals are easy compared to the long...drawn...out...trainer...sessions...at...143...to...155...bpm. Intervals keep you awake, fresh, breathing. Zone 2 sessions creep along like a slowwwww freight train. I did manage to get to 28 miles tonight. Building a base is a much needed evil, though.