Working as coded . <| sep |> The included SD card is pretty crappy . I could fail midprint and that could be the cause of your troubles . Try using a different one or printing through USB . As for the pause functionality , I do USB and I ' ve pretty much accepted it as a nonfunction . However I love this printer and think it ' s great . I ' m sorry that you feel regrets about your purchase , but I don ' t at all feel that it is dangerous , just that a few workarounds are required for a $ 200 3 D printer . That ' s why this awesome community spawned ! So we could share our love and workarounds for this amazing printer ! I hope you figure it out and that your project goes well . <| sep |> Activate the program you want to use . Then go to the workouts tab and start a workout . When you finish an exercise the app will ask you how fast you moved the bar and how many reps you were able to do . That info is saved and you can use the history tab to see both a table and a chart of how you did with each exercise . It ' s also used by the app to determine whether and how much to advance the weight . For GZCL the T 1 and T 2 exercises increase the working weight at the end of the 4 week mesocycle depending upon how many extra reps you were able to do in the As Many Reps As Possible set . For the T 3 exercises the working weight is increased once you are able to do 12 reps without stalling and reps next time are dropped to 8 .