Precore 100i: AKA The Death Machine, AKA The Calorie Killer... Shaved off 454 calories in 35 minutes. Resistance intervals 4-6. I was only able to do 2 weight machines after the workout that thing gave me. I kept thinking Bill Bostick says to try 30 with 5 min cool down, Bill Bostick says to try 30 with 5 min cool down, Bill Bostick says to try 30 with 5 min cool down, I can do this....