“…Cortisol levels rise in response to negative experiences, such as dental examinations (Benjamins, Asscheman, & Schuurs, 1992), insults (Cohen, Nisbett, Bowdle, & Schwarz, 1996), and experimentally induced pain (Dixon, Thorn, & Ward, 2004), neutral experiences, such as cognitive tasks (Bohnen, Houx, Nicolson, & Jolles, 1990;Bohnen, Nicolson, Sulon, & Jolles, 1991), and positive experiences, such as parachute jumping (Cook, Read, Walker, Harris, & Riad-Fahmy, 1992; for a review, see Kirschbaum & Hellhammer, 1994). Cortisol levels also rise in response to physical exercise, peaking somewhat after the conclusion of the stressor (20-30 min after in Cook et al, 1992).…”