Why is NFL football called football when players use their hands mainly?
Sports historians have no clear answer. The current form of football evolved from the 1800s based on rugby and the rules were heavy on a lot of running. My opinion is that influenced the sport and the football word came into origin.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: Why is NFL football called football when players use their hands mainly?
### Input: 
### Response: Sports historians have no clear answer. The current form of football evolved from the 1800s based on rugby and the rules were heavy on a lot of running. My opinion is that influenced the sport and the football word came into origin.