Tilden, I agree. The pool or exercise bike would be easier on the knees. The young man on the blue team appears to be danger of injury too. His leg betrays him and no wonder; it is carrying so much weight. My choice would be Bob between the two; I have never liked Jillian's constant screeming.
Maybabie, yes, Bob and Jillian had to know about the new trainers. They were probably not aware of the 4 week immunity though. I think production likes to get a genuine response from them concerning challenges and this would be in that catagory. I am with you on Dr H. Big yawn. He will show up soon though.
This show needs some tweaking. The same old drama, tears, and maudlin speeches on the scale are tiring.