Yes, there's a considerable calorie buy-in, but it's not necessarily a throw away station. Pacing that buy-in will be the difference between blowing up and being able to do more wallballs and burpees. Adding 45 seconds to the bike but being able to do 10 more wallballs or burpees is far better than doing the bike in less time but being too dead by the end to do any more beloved wallballs and burpees. So nice and easy, and then--you guessed it--nice and easy.