Carry more water than you think you need. Glug a bunch before you go, too. And leave a water bottle in the car, so you’ll have more to drink when you get back there (you won’t have to carry that one, either – it’s free!). Nothing’s worse than rationing water on a hike, except for running out. Bring a ton. Liters. Gallons. Even if you don’t drink it all, think of all that extra free exercise you’ll get from lugging it around!