After the loss of a loved one, the grieving process is complex, and often life-long. Unless you’ve experienced this firsthand, it may be hard to understand another grieving person’s behavior.Then again, even if you do know how it feels, it can be hard to explain what it’s like to other people.One of the biggest issues with trying to explain grief is that emotions can change. They can come and go. But it’s not that simple. The sadness is beyond sadness, and can be absolutely staggering. It is constantly shifting in strength.Finding the language to explain this clearly is important — and Lauren Herschel, a Twitter user, explained what a doctor told her. Her analogy of ‘the ball and the box’ really resonated with a lot of people, and her thread explaining grief went viral.This is how Herschel’s doctor explained how grief is triggered in the brain:Proper BCS greatergood_ctg_abovevideoSource