I dragged my 20L backpack off the van and onto my back. I closed my eyes under the heat of the 9.30am Thailand sun. Normally, I wouldn’t be sweating this much, I thought to myself as I walked down the street. It was only my backpack and my sweater that was making me hot. But really, the combination of the sun and the cool, mountain air of Pai was refreshing to the heat of Phnom Penh and Ho Chi Minh.