"Adventure Activities" class in college
1997: During my senior year in college, I took a class called "Leadership and Adventure Activities". Over the course of the semester, the class went indoor rock climbing, went rappelling down a cliff face, did a ropes course, went hiking on the Appalachian trail and went rafting on the Lehigh River. This was an inspiring class to me because it sparked my desire to push myself to do things out of my comfort zone and to frame new challenges as exciting new experiences.
swimming with dolphins in key largo, florida
2003: On a trip to Miami for an academic conference, I went swimming with dolphins in Key Largo with a colleague. In hindsight, I wouldn't participate with swimming with captive dolphins again. While it was an interesting experience, these dolphins should be free in the ocean. (A place in New Zealand does a "dolphin encounter" experience where you can swim alongside free dolphins in the ocean.)
paragliding and jet-skiing in malaysia
2007: Penang, Malaysia
skydiving in hawai'i
2007: North Shore of Oahu, video from my camera strapped around my wrist
hang gliding in new york state
2015: New York State
WHITEWATER RAFTING ON THE LEHIGH RIVER
hot air balloon ride in bucks county, pa
zero gravity flight
2018: A ride on the "Vomit Comet" aka a "reduced gravity" flight - 15 parabolas in a plane with about 22 seconds of weightlessness when at the top of each arc as we fall toward the earth. With only approximately 15,000-20,000 people having done this in the history of humankind, this is inarguably the coolest, most unique thing I've ever done! (...and, no, I did not vomit!).