We're right in the middle of the holy month of Ramadan, which means that Muslims around the world are demonstrating their faith by fasting from sunrise to sunset.

Across all religions, there are people whose faith is challenging them right now. Whether it's sacrificing food and water for the day, committing good deeds, or stepping in to ceremonial sweat lodges — belief is something that motivates billions of people every single day.

On this Now or Never, meet folks whose faith has inspired them to take action.