Ezra Charles prepares to fight Rocky Marciano in 1954

Charles, a former heavyweight champion, is training in Monticello, NY, for a 15-round bout to reclaim his title. His regimen includes heavy bag workouts, and he aims to become the first ex-champion to win back his crown. At 32, Charles is a skilled sharpshooter with jabs and hooks, but time is running out for his 'now or never' chance at the title.

What type of training does Charles incorporate into his daily drills?

What does the text imply about Charles's age and its impact on his career?