what's the difference between drinking pure water and fruit juice?

[LeeJunFan]

In terms of the amount of water your body gets?
I know that gram for gram there will be less water in fruit juice because of other things like sugar but why is it when someone tells you to drink more water they also say it should be pure water?
I know that drinks with caffeine in will dehydrate you but I can't understand about drinks without caffeine, does your body have to run more processes if there are more things in the water?
Help is appreciated, thanx!

 

[anthrax]

About the same

Pure water being a little better (less potassium)

 

[Robert Jan]

difference is some sugar and some fibre and some flavour lol

 

[coldblue1955]

you don't need fruit juice but you need water. Not saying it's wrong to drink fruit juice every now and then.

 

[SoreArms]

I like mango juice