I was tired, sore, dehydrated and cranky.
Our Smoggy--cranky? Maybe a little more free with an opinion...

I discovered that I was diabetic because of working too much before a gig. All of us would load amps and drums and it would wipe me out. I couldn't move. Of course, I'd have a beer (yeah--not a good idea looking back on it) and try to recover. It would leave me about a step-and-a-half behind everyone else all night long. I'd go from low glucose levels to high in a short period of time. It was kind of tough on this old dog.
Now that I've had it pointed out to me that I can run out of gas easily, I'm actually able to load in to a gig, set up and be ready to go all night.
Some one-size-fits-all tips that everyone else in the band seems to have picked up on include:
1) Try to eat protein and not as much sugar. Jerky in the gig bag is great to chew on while you're setting up. Try to have a burger during the evening (on a break) to keep up to speed. Fries distill into glucose which can become a sugar high with a sugar drop.
2) Drink lots of water. Now drink some more. Sweat as much as you can. Make a tinkle during the break.
3) Sit down and take a break to relax when you are able. If you're young and immortal, that's kind of tough to do. If you're more **cough** chronologically gifted, you'll find it a little easier.
Point being: no one remembers how fast you loaded out. They remember how good you were.