I&rsquove never gone trekking before. Not the nine hours a day, cross-a-mountain-range sort of trekking. I&rsquove never done backcountry camping. Only car camping, where my sister sets up the tent, while I decide which tree to pee behind. I don&rsquot own hiking shoes or a daypack or a breathable raincoat or a sleeping bag. None of those things made sense in Bangladesh where I&rsquod been living for the past two years. I don&rsquot have those hip ripstop trekking pants that zip into shorts. Only jeans with holes in the bum that I reluctantly had patched after my father forbade me to leave the house thus attired. I&rsquove had knee surgeries on both knees, and these been inexplicably stiff for weeks. I don&rsquot do well in high altitude, as recently proved in Bolivia&rsquos alien surreal salt flats. I hate the cold.