Clif Bars (in particular) might not be a good pick. Clif Bars (and likely other energy bars) should be eaten along with a lot of water - generally 1-2 liters. P

Clif Bars (in particular) might not be a good pick. Clif Bars (and likely other energy bars) should be eaten along with a lot of water - generally 1-2 liters. Potable liquids as I understand is much harder to come by than food. OTOH, I've only ever used Clif Bars in high-impact cardio settings, so YMMV.