Fay Nugent developed a fear of heights in her 30s. "It began after I went on a girls' weekend away," she says. "We had gone on an adventure activity called a tree-top walk. "I managed to climb up ...

Pediatric ER nurse Heidi Farrington, 53, took a via ferrata in West Virginia three years ago, in part to shake a fear of heights. Tethered to lines anchored in rock, she could enjoy some of the ...