After a trip to the supermarket, even the most disciplined shopper will come home with a couple of items that weren’t on his or her list. What is the strange force that drives us to buy on impulse? Are we being unwittingly enticed into purchasing things we don’t want or really need?

Mike puts these questions to two experts in the field - Phil Lempert, editor at SuperMarketGuru.com, and founder of 80 Twenty Nutrition and registered dietitian Christy Brissette.

Got questions? Email Mike at [email protected]