Don’t put it through the washing machine or jump in a pool with it. Avoid getting it wet, basically.
Avoid showering or washing your hands with your jewelry on. Soap can be corrosive.
Avoid grinding your jewelry on hard surfaces. You may scratch the plating.
Put your bracelet on last, after cosmetics, perfume, hairspray and other chemical substances that can be corrosive.
Avoid physical activities and any throwing motions: football, frisbee, baseball, etc