Now you might have seen one of the ALS Ice Bucket Challenge videos posted all over social media.
It's designed to raise money and awareness for ALS or Lou Gehrig's disease.
One local family is an advocate for the social media movement because they know what its like to lose a family member to ALS. The disease is rare and deadly. It weakens nerves and muscles over time.
Neurologist John Wright says life expectancy is less than five years.
"It's devastating, it's shocking, it's devastating to hear," Nikki Leonard said. "You don't wish this upon your worst enemy to ever be diagnosed with this disease."
Right now, there isn't a cure for the disease which is why awareness and research funding is important.