I just bought CycleOps Fluid2. Tried it yesterday with my road bike. Jeez, even with the air-conditioner on, I was sweating buckets just after 10 min. And 15 min later, I took off my shirt.

OK, my question is: why my heart rate was lower than the ones when riding outdoors? I felt my feet were so tired that I stopped after 10 km. Am I so weak?

Ave HR: 118 (vs 14x outdoors)
Max HR: 155 (vs 175+ outdoors -- when climbing)
Calories burnt: 153 kcal (just about a coke's ? )
Ave Speed: 20.36 km/hr
Max Speed: 38.48 km/hr
Ave Cadence: 76

I used 34/14 mostly, as well as the nearby gear ratios.