1) When you pack too much and you can't lift your bag....

2) But your friend is annoyingly efficient at packing theirs

3) When you discover your hostel doesn't have wifi...

4) You're not willing to spend an extra pound on accommodation...

5) But will happily blow your week's budget on beer

6) You will constantly be either too hot....

7) Too cold...

8) Or drenched... There is no in between

9) Think you're going to get some "alone time" in your dorm room? Think again

10) You are no longer aware of your own body odour

11) You never know what day of the week it is

12) Lost passport panics are a frequent occurrence

13) This. All the time.

broken flip flop

broken flip flop

14) When you miss your flight - and the next one is in a week's time

15) When someone steals your last can of dry shampoo...

16) When you get stuck next to the most boring person on the planet on a 17 hour bus journey

17) And finally, when you've run out of money so you have to go home...