関連ワード:  how.to.stand.up something heavy    how to get something heavy up stairs    how to get something heavy up stairs by yourself    how to get something heavy up stairs alone    how to get something heavy up a flight of stairs    how to make something top heavy stand up    how to stand up a heavy post    why do i feel heavy when i stand    why do my legs feel so heavy when i stand up    how should you stand when you're lifting a heavy object