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For instance, if you are to start with making your thesis, the thesis itself is not the stimulus, rather it’s the deadline, the depth of the subject, the extent of research to be done, and even your partners in your research group are just some of the many potential stimuli that can influence your response. The way you respond to these stimuli is exactly what stress is. Stress is the mismatch between the perceived obstacle and the perceived resources [3] for coping [4] with the "demands" of the obstacle.