It is anyone's guess as to what is ailing the Jets head coach, but stress might be playing a role here. Bowles has been under fire all season for his perceived lack of innovation with the defense, lack of accountability with the offense, and clear mishandling of the quarterback position.
On top of that he has dealt with a defense that has badly underachieved with many players who look like they have checked out long ago. He also had to deal with the behavior problems of Sheldon Richardson and Muhammad Wilkerson, and had to work with a cornerback in Darrelle Revis who is a shell of his former self.
And, don't get me started on the quarterback position.
Let us not forget that these head coaches work countless hours, sometimes 17-18 hour days and almost never leave the office. There are coaches who even sleep in the team facilities in order to get up at the crack of dawn and get cracking on the next day's plan for the team. It is not an easy job. Working in New York and dealing with all the stress and noise could have played a role here, it certainly wouldn't be surprising.
Bowles is not the first coach to fall ill this year, in fact he is the fourth. Bowles' old boss, Cardinals head coach Bruce Arians fell ill earlier in the year and complained of chest pain. He didn't miss a game, but had to take it easy for a few days. Denver Broncos head coach Gary Kubiak missed a game due to a migraine headache, and Vikings head coach Mike Zimmer had eye surgery.
Let's hope that Bowles makes a speedy recovery from what is ailing him. We'll learn more by game time for sure.