This is the 13271st most frequent Swedish word.
träningspassen
"The training sessions."
The word 'träningspassen' is used as a plural definite noun, referring to specific workout sessions.
Jag tycker att träningspassen på gymmet är mycket roliga.
I think that the workout sessions at the gym are very fun.
Here, 'träningspassen' is again a definite plural noun denoting a recurring or known set of workout sessions.
Träningspassen blir svårare när man börjar använda tyngre vikter.
The workout sessions become harder when one starts using heavier weights.
In this sentence, 'träningspassen' serves as the object of the prepositional phrase, still indicating definite plural workout sessions.