The White House South Lawn turned into a mix of fitness initiative and pop culture moment this week, as Donald Trump showed a group of students how to perform his signature “Trump Dance” to the beat of Y.M.C.A.. The lighthearted scene came on the heels of Trump’s renewed push to bring back a more competitive edge to physical activity in American schools. As part of that effort, he recently revived the Presidential Physical Fitness Award, tying it directly to the return of the Presidential Fitness Test.