The issue focused on long-term memory is often cited as an issue for neuroscientists; whether this would include changes in behavior as well as memory for environment is unknown. For example, does simple exposure to changes in diet affect memory for environment? Or does greater exposure to stress affect memory for environment? To date, no studies have examined such effects in humans. For example, putative neuroprotective effects of moderate exercise or exposure to environmental cues have been observed in experimental animals; however, these effects have not