It was something that had been put into place in our research group before I arrived. It became apparent that some PhDs and postdocs were struggling with the academic culture, but also insecurities and mental health issues. We asked the group to elect two people that people trust and feel like they can talk to. After they've been elected, we just have to let our door open and people have to know that if they're experiencing some issues, some stress, they can come talk to us about it, of course, privately. Especially for starting PhDs, sometimes I think it's hard when you don't really know other people, and you're stressed, and you don't know if the strings are normal, if it's just you. If there is someone that is a well-being ambassador, I think it helps in saying, "I can go talk to this person. People trust this person, apparently." Of course, it doesn't mean substitute - like we're not mental health professionals, we're not clinical psychologists. It goes to a certain extent. We can always re-direct, like, "I think, right now, you should go to a therapist or to a mental health professional because it goes beyond my capacity." And also, we are not trained to take the other's problems on our shoulders. Aometimes it can be quite heavy. So, it's also something we need to stay aware of, what's beyond and in our control.