Chocolate (but not white chocolate), caffeine and fizzy drinks and getting very hungry (going too long without food). Bending over from waist causes reflux/burning. I cant drink much water as the thinner liquid seems to leak out of stomach sphincter (reflux) more easily so I live on milk instead. The milk helps ease the burning too.
I live on Zantac 1-2 times a day and that helps alot.