Wearing your new bra on the loosest hook setting extends its lifespan and provides the best support. This designed approach allows you to gradually move to tighter hooks as the elastic naturally becomes looser with wear and washing, maintaining the bra's supportive qualities over time.
A well-crafted bra delivers support primarily through the band, which should feel snug against your ribcage without causing discomfort or leaving marks.
If you need to use the tightest hook on a new bra for adequate support, the band size is likely too large - try a smaller band size for better stability. The right hook setting creates a foundation that stays in place without riding up, allowing you to move freely while maintaining the targeted support throughout your day.