 Ukuhamba ezindongeni ezinkulu ezibangelwe umfula kuhlanganisa izici zokubhukuda, ukugibela kanye nokweqa-- kodwa kudinga ukuziqeqesha okuncane kakhulu noma isimo somziba ukuze uqale uma kuqhathaniswa nokugibela amadwala amakhulu, i-scuba diving noma i-alpine skiing, ngokwesibonelo. 