Overheated
It's hot here. I try to drink a lot of water.
Still I got headache, froze and helt so swallen, especially the feets.
To compensate this, I've eaten a lot of fruits, drank a lot of water and did excecise to circulate the fluid better in the body.
It just got worse.
Goooooogle.
I ate some salt, the small bag of salt I took from Lufthansa.
It helped.
Amazing.
FYI, Vietnamese people eat fruit with some salt.