Take another look at the sentence:
Collapsed on the couch, Nick's relaxation was well earned after the hard
day of moving heavy furniture to his new apartment.
Collapsed on the couch, a participle phrase, comes right before relaxation, an illogical target. [Nick's, a possessive noun, functions as an adjective describing relaxation.] People, not relaxation, can rest on the furniture! Before you continue, review the rules for misplaced and dangling modifiers.
Go back to the sentence to try again.