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Content: Situations of exceeding anxietyand stressful, intense experiences create unpleasant memories. It is important, if not crucial, to remember situations that might have hurt us seriously. It makes sense that the stress hormones should facilitate our retaining the memory of events occurring under stress. Stress hormonesdo bind to the particular receptors in the brain that enhance the control of the epigenetic mechanisms involved in remembering and, hence, in learning. They do boost the epigenetic mechanisms that regulate the expression of the genes crucial for memory and learning. Not all stress boosts learning. Too much stress produces the opposite effect. There is a difference between being stressedand stressed out. When we experience far too much stress, our organism goes into an alarm mode where survival has the first and sole priority, and memory formation decreases. Chronic stress does not promote learning either.