If there’s one thing you can say about star singer and actor Justin Timberlake is that he stays and looks young pretty much all the time. So what’s his secret? Well, Timberlake stopped by the Ellen DeGeneres Show on Tuesday where he and host Ellen DeGeneres traded quips during the Burning Questions segment, with both sharing that “being childish” helps them remain youthful, per People. The “Rock Your Body” singer added that his secret to staying young is making sure his kids “don’t grow up too fast.” Check out the segment below.