Stressors are what activate the stress response in your body. They can be anything you see, hear, smell, touch, taste, or imagine could do you harm. There are external stressors: work, money, family, time, cultural norms and expectations, experiences of discrimination, and so on. And there are less tangible, internal stressors: self-criticism, body image, identity, memories, and The Future. In different ways and to different degrees, all of these things may be interpreted by your body as potential threats.