President Joe Biden is getting some encouragement from legendary gymnast Simone Biles to use his last days in the White House wisely. In a tweet posted on Wednesday afternoon, the seven-time Olympic gold medalist asked Biden to make the most of his lame-duck period, though she notably didn’t give him any specific instructions. “Mr. Biden, I need you to stand up, straighten your back and make some things shake before your departure,” Biles tweeted, before concluding with: “xoxo the women in America,” with a blue heart emoji. READ MORE: JD Vance: Simone Biles shouldn’t be praised for ‘weakest mo…