a meal comprised primarily of refined starchy foods that are quickly digested (e.g. white bread, white rice, refined cereals) will cause your blood sugar (glucose) to spike after eating. ... Eating a sugary dessert causes serotonin levels to rise in the brain, which can make you feel calmer and happier. Sweets After A Meal + How To Stop It. by Jeanette ... Avoid drinking water with the meal since that can cause you to not digest the meal as well. When you don't ... not judgment):. What did I do right before?