Other games donate to a charity when players reach a certain level or other achievement.

FORBES: Donate To Charity Playing Branded Games With GamesThatGive

However, it wasn't clear from the study how much fish or other omega-3-rich fare people consumed to reach a certain omega-3 level.

WSJ: A Diet Rich in Fish May Help the Aging Brain

Using a written asthma action plan can help you and your child remember what to do when peak flow measurements reach a certain level.

CNN: Childhood asthma