No.
Like I've said before, Racism is fascism practices on Black people first.
There are kids that are super into sports, that don't go incel fascist. Most young Black boys in this country are super into sports. Many get super into fitness and working out as well.
The sports/fitness is not the common denominator. The racist worldview is. That worldview is formed by the people they're around, the news that they consume, and what their parents and friends say.