I don't function well without either coffee or tea in the morning. It's not the energy factor at all--I've never actually noticed caffeine having an effect on me (until one time way back when I was using it heavily and quit cold turkey...ouch!). I just really enjoy having the hot, dark, rich, bitterish brew in the morning. Livens up my senses. Smells great. Same with teas. Most of the packaged meals I bring, along with summer sausage and cheese, gives me enough salt, though not necessarily the best-balanced electrolytes.
When I need a boost on the trail, first thing I do is stop, chill out, and take a swig of the coldest water I can get. Then I might take a nip from the flask-bracing and beautiful. Chase it with dried cherries and almonds, maybe some m&ms. Works great for me... But hey, what if someone made dehydrated beer?!