Have you ever noticed how quickly a cold can be passed within a family? I have found other things that are almost as contagious. A wide grin on a face can quickly spread through a crowd. If you drop something and then start looking on the ground, soon others will be looking too. The same thing seems to happen if you stand outside in a crowd, do nothing but look up, soon others around you will be looking up. Guess how many will ask you what you’re looking for in the sky?
Something else I’ve noticed that is catching, very catching. A yawn is extremely catching. If you stand in a crowd and yawn, soon you will see the yawn spreading out like ripples on a pool. You don’t have to cough or sneeze and yet you have spread something contagious. If fact, I’ve just seen a yawn on the TV! Now I’m yawning–time to go to bed. GRIN, oh yeah and yawn!