Over the course of a month, track how much exercise or physical activity you engage in (frequency, intensity, duration, mode). (You may wish to use the Perceived Stress Scale for this task.) Also track the kinds of stressors you encounter, in terms of how much stress they cause for you, whether you can do anything about the stressor, and how long the stressor lasts. Finally, assess how much stress you perceive for yourself. This can be done on a daily basis or at the end of the month-long observation period. Is there any relationship between your level of activity and your perceived stress?