Behavioral epigenetics is a way of understanding how our genes and environment can affect how we behave. It is like looking at the way a gene can be "turned on" or "turned off" by things happening in our lives. For example, if someone experiences a lot of stress in their life, their genes can respond by "turning on" and changing their behavior, such as feeling more sad or angry. Similarly, if someone has a lot of nourishing experiences in their life, like feeling loved and supported, their genes can respond by "turning off" or changing their behavior in positive ways, like feeling more happy and calm.