In terms of stress, it seems that there is a relation between how frequently subjects experience stress and the pleasure they reported to have felt during the experiment (see table 1). However this relation is not statistically significant. We found no difference between subjects that reported to be under constant stress and the others in terms of all the parameters. This holds true even for the subject that reported to experience extreme stress. Does this fit with the HRV data? Are subjects poor at reporting their stress levels?