This is the 6073rd most frequent German word.
courinen
The word "courinen" does not exist in standard German; it may be a misspelling or an invented term.
Here, 'courine' is used as a verb meaning 'to exercise or work out' possibly derived from the French 'courir' indicating physical activity.
Ich courine täglich, um meine Fitness zu verbessern.
I court daily to improve my fitness.
The noun 'Courinen' indicates the act of performing physical exercises or workouts in this context.
Beim Courinen fühle ich mich frei und energiegeladen.
When working out, I feel free and full of energy.
Here, 'Courinen' is used nominally to denote the collective act of exercising or physical activity.