Prior to his career as one of the elite boxing trainers of his time—working with fighters Manny Pacquiao and Oscar De La Hoya—Freddie Roach was a tough professional fighter with over 50 bouts during his eight-year career. With a final record of 40-13, Roach never held a major title but he also was only knocked out three times.

“I tried to train hard for all my fights, especially the big fights, like with Camacho,” Roach says of his meeting with the late Hector “Macho” Camacho. “I sparred a lot of fast guys with good speed to prepare for him, but when the fight came they weren’t fast enough. He was the most talented fighter that I ever faced, reminds me of Manny Pacquiao.”

Even later in his career, Roach was known for being able to withstand a lot of combat in the ring. However, his solid conditioning couldn’t prevent the onset of Parkinson’s disease. Today, Roach says the exercise he gets training fighters and all the coordination work he does coaching boxers helps fight the disease’s progression.

“In my day, we didn’t have all these different strength and condition coaches. They’re the ones that are bringing steroids into our sport,” Roach says.

Lately, the focus of Roach’s energy has been preparing for the fourth meeting between Pacquiao and Juan Manuel Marquez. Although Pacquiao bested Marquez in two previous matches, the two fought to a draw in their first encounter in 2004 and to a close, controversial decision for “Pacman” in November 2011.

“Pac is in the best shape I’ve seen him in in a long time and he’s giving his sparring partners a lot of trouble, we had a few knockdowns. He works his ass off,” Roach says. “We sparred six days a week in my day; I only spar my fighters three days a week.”

Pacquiao’s workouts last about three hours per day, but he rarely does any weight training, which Roach feels slows down smaller fighters. For that reason, a boxer’s workout is reliant on a variety of calisthenics, with an emphasis on cardio. “When I trained Mickey Rourke to box, we did midnight runs because he is nocturnal, but as long as your body is on a schedule, exercises are going to work,” Roach says.

NEXT: Freddie Roach's Training Regimen >>

Freddie Roach’s Hard Day of Training

Start your day in the gym with a long run starting at about 6 AM and then follow Roach’s exercise routine.

5-Mile Run (Decreased distance with increased sparring)

Shadow Boxing (Build up a sweat before you get to boxing)

8 Rounds Heavy Bag (Important to hit the bag hard with proper punches)

3 Rounds on the Double-End Bag

3 Rounds of Jumping Rope

6-8 Rounds of Sparring Max (Pacquiao likes to spar 12 rounds)

Cooldown

Pacquiao-Marquez IV will air live from the MGM Grand in Las Vegas on Dec. 8 on HBO PPV, 9 p.m. ET.