Like I said before, if Barry Allen ever were a real person he’d ironically be more athletically inclined than most would’ve expected but that’s because I’m interested in sports (especially football) and I have a relative who runs every weekend. Then there’s Usain Bolt, the actual world’s fastest man who recently plays football. All the more a reason to know that’s what Barry’s actually like.
It’s like in the comics if Barry’s got super speed he’d use it to to do unusual feats like interdimensional travel, quantum travel and other nonsense. It’s one thing to speculate on what’s like to have those abilities, it’s another to know about people who’re already capable of running and even working real quickly. If you’re good at running fast, you’d gravitate to sports.
Especially football and sprinting and Usain Bolt’s both. Interestingly enough, Jay Garrick (Barry’s predecessor) actually played American football. That makes him acquiring super speed predictable because he already had the conditioning and experience. (One wonders if Jay’s creators were well-aware of sports enough to know when to make a superhero out of.)