What would stop football players from having fun in the game?
Options:
- being happy
- smiling
- may laugh
- chickens
- injuries Let's give stream of consciousness first:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Injuries are damage to a person's body from falling or getting hurt. Football players fall down and get hurt while playing.
Therefore, the answer is injuries.