Adrienne struggled to focus her eyes, which felt strangely heavy.
Her head felt strangely heavy; any movement came with effort.
Do you feel (you must) how strangely heavy and stupid I am?
His breath was gone, his head strangely heavy as he forced himself to look at her face.
It was strangely heavy, like a slug of lead.
The air felt strangely heavy, and the atmosphere appeared to have turned into gaseous lava.
His legs felt strangely heavy, as if he had been plodding through molasses.
The silver arrowhead felt strangely heavy in her hand.
The husband who woke after a strangely heavy sleep to find his wife gone from their bed.
They felt odd, and strangely heavy for a little package of wool.