Raised in Quincy, Massachusetts, Doyle attended Boston College High School, where he played football.
Doyle attended college at Boston University, earning a Bachelor of Science in human movement and a Masters of Education.
He trained 180 student-athletes who have joined professional sports teams, as well as 19 former assistants who have become head strength and conditioning coaches.
[2] Doyle was the Iowa football strength coach in 2011 when 13 players developed rhabdomyolysis following gruelling offseason workouts.
[4] During the 2020 racial unrest in the United States after the murder of George Floyd by police, Black former Iowa football players called for changes within the program.