"Chemistry" is one of those words coaches use frequently during interviews.
They talk about team-building exercises, about how the team became close during time spent in the weight room or offseason conditioning or team meals.
But, really, what is chemistry?
Is it players who like each other? Trust each other? Want to see another succeed? Are unselfish?
In this context, Merriam Webster defines it — a: a strong mutual attraction, attachment, or sympathy; b : interaction between people working together; specifically : such interaction when harmonious or effective.
Heights football coach Rick Wheeler doesn't need a dictionary to define chemistry.
"You know when you have it and you know it when you don't," Wheeler said.
"It's an intangible. I believe we're really close to having really special team chemistry."
For him, that is most clear when you look at his team's success (7-0, ranked fourth overall) and offensive numbers.
Dreamius Smith is the biggest offensive star and has committed to Kansas. He has 790 rushing yards, 14.9 yards per carry.
He missed all but a few plays of one game after being ejected and was subsequently suspended for a second game. Heights didn't miss a beat.
Daniel Deshazer has 619 rushing yards (13.5 per carry), quarterback Matt Reed 485 (7.8), Marquel Moore 396 (13.7), Jerry Jones 276 (7.5), Kenneth Iheme 221 (11.6)
"All those guys, their carries are not that different," Wheeler said. "What these guys have shown is their commitment to the team is more important than individual stats. Unselfishness is remarkable."
Chemistry is clearly working for Heights. And while it's nice wins come with it, there's an even bigger positive.
When you don't have chemistry, "other things become distracting, so you're focusing on things that aren't really the things you should focus on to be successful," Wheeler said.
Chemistry doesn't always mean success — and teams can win without chemistry.
But, oh, those players and coaches know the difference.
"Oh, it makes a big difference when you have chemistry," East coach Brian Byers said. "It's hard to define, but you have a feel for it. We have good chemistry. We're young, and we do things well and do things not so well, but we have good chemistry."
Byers said the easiest way to tell if a team has chemistry is the atmosphere surrounding the team.
"It's how they go about things," Byers said. "I've been on teams and coached teams that won a lot of games that didn't have good chemistry but had a lot of talent. There was a lot of infighting going on.
"I've had other teams where we had good chemistry and not that much talent. They ended up winning, probably overachieving.
"If you could have chemistry and talent in the same boat, you'd have something."