He dragged his huge tired frame towards the couch.
Explanation:
Let's look at the sentence:
He walked towards the couch.
This tells us that the man was walking towards the couch. But it does not tell us more about him - how he looked like and how he walked. Here is the same sentence modified:
He dragged his huge tired frame towards the couch.
The sentence shows us how the person looked in terns of the body structure (huge tired frame) and how he walked (dragged).
