Once every 2 weeks. It shouldn’t be more often than that or else it would ruin the structure.

Its the same with underwear...you change it daily due to hygiene

If I don't sweat in it, I may wear it again before washing.

Depending on how dirty i was that day too.

I wash a bra after every use

Daily! Cause of hygiene.

SG weather is too insane

Ofcourse Everyday

Need to wash meh?

Hygiene hygiene