Interesting article on Wired on an unusual, but perhaps logical use of skydiving..
The authors collected sweat, urine, blood, saliva, ECG, respiration, and self-report measures in 20 subjects (n=11 males and n=9 females) before, during, and immediately following their first-time tandem skydive, as well as before, during, and immediately following their running on a treadmill for the same period of time. Measurements between the test (skydive) and control (exercise) conditions were made on consecutive days, each experiment precisely matched to the minute between subjects and between conditions to prevent diurnal confounds. Emotional states were monitored using brief standardized questionnaires. For most of the observed compounds, men showed an increase in the compound emission during acute emotional stress, while women showed either no change or a decrease in emission of the compound.
