It's easy being green and that was what's written in the banner of a backpack mountaineer that I saw in the website. Mountaineers who did the hiking packed themselves with many protein water to keep them hydrated while taking the hike. But even before hitting the trails, they load themselves with lots of carbohydrate and protein food to keep them strong and healthy for the adventure. Aside from flavored protein drinks like sour apple, orange and lemon, some of them take supplement like protein powder to keep them going for a week stay in the mountain. It helps them keep healthy and it boosts their energy while on the hike.