The biography, life, and accomplishments of Mike O’Hearn

Mike O'Hearn

Mike O’Hearn is a bodybuilder, fitness model, and entrepreneur, among many other things, who has been in the bodybuilding game for decades, collaborating with many other fitness icons, such as Rich Piana and Joseph Baena, and continuing to pass his knowledge on. His hard style of training is matched by a calm demeanor outside the gym that all can relate to.

Below is a complete breakdown of his profile, stats, biography, training, and diet regimens.

Full Name: Mike O’Hearn

Weight Height Date Of Birth
245-255 lbs. 6’3” 01/26/1969
Profession Era Nationality
Bodybuilder, Model, Entrepreneur 1990, 2000, 2010 American


Mike O’Hearn Biography

Born in 1969, Mike O’Hearn is a fitness guru and model that has held a successful career for over 30 years. Mike is a 4-time Mr. Universe and California Powerlifting Champion, California Judo Champion, and Strongman. He’s starred in the American Gladiator as Team Captain the “Titan”, a nickname that ended up sticking with him, and he was also featured in over 500 magazine covers.

Mike O’Hearn has found similar success in many areas. Aside from him being a former Mr. Universe winner, successful strength athlete and all around fitness freak, Mike is also a model, an actor, and host of the Mike O’Hearn Show. Mike began his workout journey because of his father, who was the main influence of the family. His dad was a bodybuilder and football player, and his mother was an artist. In 2020, Mike was featured in documentary motion picture, Generation Iron 4: Natty 4 Life, a film focusing on the natural side of the bodybuilding world.

Mike was the youngest of 10 and was always getting picked on by his siblings. His family was full of powerlifters or bodybuilders, including his sisters. Mike’s family was also required to do martial arts. Being that Mike was the youngest, he always strived to stand out among his family when it came to fitness and growth. This was also a way for him to defend himself.

Mike has been around for decades and is remaining strong even as he is aging, showing no signs of slowing down or weakening in his workouts. He has a hard and heavy approach when it comes to training. Aside from that, Mike works with charities and raising money for Good Dog Animal Rescue Center, which just goes to show that Mike has always had a big heart and he continues to give.

Mike O'Hearn


Mike’s workouts are generally based on heavy compound exercises with a lot of intensity to ensure that he is truly breaking down each muscle and making the most out of his time in the gym.

He makes sure to add in exercises such as barbell deadlifts, squats, and bench presses to his workouts.

  • Monday: Chest, Cardio, and Abs
  • Tuesday: Legs, Cardio, and Abs
  • Wednesday: Shoulders, Cardio, and Abs
  • Thursday: Arms, Cardio, and Abs
  • Friday: Back, Cardio, and Abs
  • Saturday: Off
  • Sunday: Off

As you can see, Mike O’Hearn hits abs every day of his training, which may seem like a lot, but abs are one of the muscles you can train every day. He then gives himself the weekends to take completely off and recover from the intense training sessions he endures throughout the week.

Core Lifts: Incline, Squat, Deadlift

  • Weeks 1-4, 70%: 5 sets of 4 reps
  • Weeks 5-8, 80%: 5 sets of 3 reps
  • Weeks 9-12, 90%: 5 sets of 2 reps


  • Weeks 1-4, 30 minutes 4 days/week
  • Weeks 5-8, 45 minutes 5 days/week
  • Weeks 9-12, 1 hour 6 days/week

Mike O'Hearn

Mike O’Hearn Diet

Mike is absolutely massive and shredded year round, looking like he about 3 weeks out from a show no matter what time of the yearit is. Mike’s standard diet is 8 meals a day. He eats 30g of grass fed protein in each meal, making sure to get enough of this macronutrient to help build back his muscles. He also consumes 50g of carbs with some healthy fats as his first 4 meals. For the other 4, he removes the carbs and adds in vegetables.

However, Mike says that his diet works for him and may not work for others, as every person is different and their bodies will react differently to different food sources and macros. Mike recommends that people try different things until they find what works.

Even though he has a very strict diet year round, he likes to change it up sometimes and eat treats to let his body recover when he is in the off-season, a nice cheat meal here and there never hurt anybody.

Mike O'Hearn


Mike O’Hearn is allegedly natural, claiming he has not and does not use performance enhancing drugs. However, while many people doubt that he is truly natural, you have to keep in mind that he has dedicated most of his life to a solid supplementation routine in order to make huge strides in the gym.

Mike adds a quality meal replacement shake to enhance the growth of his muscle mass and help with recovery. He also adds in pre-workout to boost energy levels and achieve solid muscle pumps during his training. During the spring and summer months he uses a fat burner with natural ingredients prior to his AM cardio. Finally, one of his game changers has been a testosterone booster to boost his training and performance, as well as overall health and wellness.

Mike O’Hearn Competition History

  • 2015 NPC Washington Ironman 1st
  • 2015 NPC Idaho Muscle Classic NP
  • 1997 INBA Natural Universe Bodybuilding Championships 1st
  • 1997 INBA Natural Universe Bodybuilding Championships 1st

Though his competition history was short lived, and he never stepped foot on a Mr. Olympia stage, this had not hindered Mike O’Hearn’s career in the fitness industry at all. He has remained relevant, stays massive and shredded with no water retention, and looks better than a lot of the guys who compete these days.

Personal Life

Outside of bodybuilding, Mike O’Hearn is a fitness model and podcast host, as stated above. He also continues to spread training tips and tricks, and overall knowledge that he has gained throughout his years of lifting to others in the industry.

You may also have seen the spread of the Mike O’Hearn memes from 2023, which included a clip of Mike O’Hearn flexing and outrageous text to accompany it, all to the tune of “Baby Don’t Hurt Me”.

Wrap Up

Mike O’Hearn on the set of ‘Divinity.’

Overall, Mike O’Hearn may not be someone who competed in the Mr. Olympia, but he has made quite the name for himself in the fitness industry. He stays in phenomenal shape year round, diets and trains with the utmost discipline, and truly cares about others in the industry.

What do you think of Mike O’Hearn? Let us know what you think in the comments below. Also, follow Generation Iron on FacebookTwitter, and Instagram!

Dylan Wolf
I work mainly in content writing, focusing my free time on bodybuilding and strength sports. I was introduced to fitness in high school and after watching Generation Iron movies. I love to train. I have competed multiple times, even winning a junior title in classic physique. I have a bachelor's in criminal justice and business obtained through Alvernia University. When I am not focused on work or training, I enjoy watching films or reading about anything and everything.