My teenage son wants to go grocery shopping with us

The other day I was going to the grocery store to do some shopping and my son said to me: "I want to go with you to the grocery store."  This has never happened before. He is also spending more time outside. I believe it is all due to this life changing program that my son has downloaded on his phone. It is a proven system (proven within the last week or so) that has gotten many people exercising more and spending more time outside. The basic premise is simple; the goal is to catch small monsters (so called pocket monsters) while wandering around the neighborhood. All I can say is Bravo to the creators of this app!