No.
If you are taking the online version and you wish to take a break, simply log out. Once you are ready to return to your training log back in using the details you created before starting your training. This will allow you to pick up where you left off.
If you are using the flash drive version shut the programme down correctly to ensure the training you have completed so far is saved. When you return to it, plug the flash drive back in to your computer and pick up where you left off.