[candiodari]

Well, my issue with fruit juice is that one or even two aren't enough to not feel thirsty anymore. And any walk that takes 600-900 calories to get to my job is not one I'll actually take on a regular basis.

A good estimate is 30-50 calories per kilometer, so a single glass of juice requires, let's say, a 5 kilometer walk to compensate.

I'm a mostly sedentary westerner, but I don't think I've eaten 2000 calories in a single day for a year at least.

[GordonS]

I've never heard of anyone drinking 900 calories of fruit juice! Is this an American thing?

[candiodari]

Just so we're clear: that's 3 glasses, right. Have you really never drunk 3 glasses of fruit juice ?

[msl]

According to Wikipedia [1], it's more like 8 glasses (2,5 dl/ 1 cup per glass) of orange juice. That's 2 liters. The apple/grape juice carton I have handy gives a very similiar number. What kind of juice (or portion size) are you thinking of?

[1] https://en.wikipedia.org/wiki/Orange_juice

[GordonS]

3 massive glasses - no, I've never drank anything like 2 litres of fruit juice in one day, let along one sitting.