Hand expression on the go tutorial. When your baby doesn’t drink enough out of the breast it can become engorged causing pain and pressure. Learn how to casually hand express on the go and either incorporate your own milk into your own diet or just to relieve the pain and pressure from a full engorged breast. (Please do not try this technique while driving. It is safe to do when parked in a safe place. Always consult your doctor for a technique that is right for you. This is the technique I use and this is only my opinion and advice. I am not a doctor but I am in training to become a certified lactation consultant.