The survival course at the 6th grade week at camp.

Laura, 34
Lowell, MA

Climb Mt. Kilimanjaro. Actually one gruelling 15hr day hard-core hiking in the White Mountains of NH comes pretty close - we actually began to get delusional from fatigue. I love that stuff, though.

Liz
Medford, MA

Climbing a "dead" volcano in the Rift Valley in Kenya. I've hiked much larger mountains, but for some reason I just wasn't mentally prepared for that hike and as a result fought against the climb the whole way. I ended up completely zonked and actually walked the rim of the volcano in a daze. However, I learned that physical challenges are much more a mental state than a physical one many a time.

Felicia, 34
Somerville, MA

CHILDBIRTH!!!!!

kimberfreed, 31

Uh, had mono. : )

Karen, 20
Marshelltown/Ames, IA

I spent a day hiking on the Appalachian trial.

Lindsay, 21
Harrisonburg, VA

I worked at UPS for 2 years. 10 hours worth of work crammed into three and a half thanks in part to the most worthless union anywhere.

Alias Irrelevante

Being pleasant while organizing transportation to the hospital with two broken legs.

Jill, 59
Saylorsburg, PA

Low income, crappy apartment complex, all-nighters, sick constantly .. I'd have to say graduate school.

Amy, 23
Baton Rouge, LA

I'm not sure. . . Maybe staying up for two or three straight days. . .working, trying to catch up with my own schedules. . . .

mothmc, 35
Pensacola, FL

As the end of one of my sophomore semesters in college approached, I sat and typed short stories and a couple research papers nonstop from noon on Sunday to 11am on Wednesday. I completely missed out on the OJ verdict, a flood drowning my hometown, and I started hallucinating that last day during a Latin exam.. I had trouble speaking clearly for a few days after. God bless Coca Cola and the Marlboro Man, i got a 4.0 that semester.

Anthony, 24
Baton Rouge, LA

Emptying out my parent's house after their deaths. Both physical and mental.

Janet, 42
E. Brunswick, NJ

Yesterday / Tomorrow