He feels dizzy when he stands up suddenly due to orthostatic hypotension.

The erector spinae is an important muscle for keeping the back straight.

This fruit has rotted.

We went down the river by boat.

He remained silent and didn't say anything.

He puffed out a breath after climbing the long stairs.

After running up the stairs, he breathed heavily.

She loves writing fan fiction.

Recently, his popularity has been increasing.

I could see the beautiful sea from the porthole.