We're putting three couples to the test in our latest "Human Lab," trying products that claim to cure some of their partners' biggest pet peeves — including our pal Bob Harper, who's testing out a gadget to help him stop losing his glasses. Plus, Aldis Hodge is in the house dishing on his new movie with Taraji P. Henson!

Ever wish you could shop the closet of a stylist? Well, one lucky viewer is getting a makeover straight out of our pal Gretta Monahan's wardrobe. Then, should you skip the salon and dye your hair at home? A celeb hairstylist tells you when you should — and shouldn't. Don't miss the 80-year-old known as the "Grandfather of CrossFit" training with celeb trainer Bob Harper. And in the kitchen, Rach is making zucchini sticks for dinner!