Biology
What makes goalies dive during penalty kicks?
Quick fact
Statistically, a goalkeeper has a 33% chance of saving a penalty by diving, but a 60% chance if they stay in the center—yet 95% of them dive anyway.
Why this is interesting
The ball travels 70 mph and crosses the goal line in just 400 milliseconds—but the goalie needs 600 milliseconds to dive. They cannot react; they must guess.