What did you have for dinner?
#23
Go to your local army/navy surplus store and get a couple MRE's (Meals, Ready to Eat). They are loaded with calories and stuff, designed with Soldiers on the go in mind. They even have their own water activated heaters to worm the stuff up (and it works pretty well).
If you're not familiar with them yet, you will be soon
If you're not familiar with them yet, you will be soon