Gary Kubiak has officially stepped down as the head coach of the Denver Broncos, the team announced Monday morning. The announcement comes a day after Kubiak told his team he was stepping down for health reasons following the Broncos’ 24-6 victory over the Oakland Raiders on Sunday. Being a head coach is a very physically demanding job, and Kubiak has battled with his health over the years. Many of his players and the Broncos staff were sad to see him go.