On Day 1 of the experiment, participants experienced low levels of pain caused by heat on their forearms. Immediately afterwards, they were asked to wear a tightly inflated blood pressure cuff and exercise their arms for 20 minutes, something which most participants found excruciating. The following day, in order to look at the role that remembered pain plays in later pain reactions, participants returned to either the same or a different room and heat was once again applied to their forearm. When (and only when) they were taken into the same room as in the previous test, the men rated the heat pain higher than they did the day before, and higher than the women did. The researchers believe that this study offers information that will potentially be helpful for the treatment of chronic pain.