How do you mentally stimulate a 4 month old baby? Bob Samanche February 4, 2020 H How do you mentally stimulate a 4 month old baby? The simple answer is by talking about them! Here are just a few of the ways you can do that. Share your tips in the comments. You Might Also Like What age can babies have jar food? January 23, 2020 How do you measure the chest for shoulder pads? January 22, 2020 What is engagement shoot? January 25, 2020 Do chiropractors release toxins? January 22, 2020 What is an example of ultimatum? January 22, 2020 How do you clean your house like a pro? January 25, 2020