Translation of impetus in German

I don't remember exactly what we did there, all I remember was that there was some show including a snake and a Janasene tourist agreed to have the snake on her neck. I almost fainted just by watching.
The next morning we felt much better, but we decided to stay in bed the entire morning to fully recover. We watched some Seinfeld episodes which were running every morning at around 10a.m.
The same afternoon (October 4) we took a flight to Arequipa, spearing a bus ride of 12 hours. Due to heavy winds we had a delay of 2 hours. We took off at around 4.30pm.