The mind and soul training was something that Rasmus didn't expect to learn. During that training, he was forced to take more of that medicine every day. He was forced to understand his mind and to become one with it rather than taking it for granted.
The main objective of the training was to meditate and learn about his body at its lowest and weakest state. He had to drink the medicine with a higher dosage, which also meant that he would suffer even more. His goal was to overcome the side effects and to maintain peace within his head.
On the first day, he couldn't even stay still or think because of the medicine. He had to re-live the hellish night and suffered for hours until the morning. It was a complete failure, and he could die from the medicine if he couldn't achieve it before his body collapsed.