Not about cycling, not really . . .
OK, so a few weeks ago I was using a hand crank exercise machine. With a variable setting ('Rolling hills') I could sustain 180W, and do 30s 'sprints' of 300W. 20 min sessions.
I'm going to a different gym and using a cross trainer (I've been doing a bit of jogging, 5km in about 25-26min). According to the cross-trainer, I'm sustaining 160W, maxing at 240W.
The cross-trainer is killing me.
This doesn't make sense. The cross-trainer is using my legs and arms. My legs are dying. I'm putting out fewer watts, heart rate about 170. I don't have the arms of a beast!