Corey Kosick lightening bolt

Verified 22 Reviews
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About Corey

Hi, I’m Corey — a certified personal trainer and competitive powerlifter holding multiple state records with a passion for helping people build real strength and confidence through proper technique and progressive programming. Whether you're looking to improve general fitness, build muscle, or hit a big personal record, I’ll meet you at your level and guide you every step of the way.

I specialize in strength training, muscle building (hypertrophy), and fat loss through customized plans built around your goals. With 3+ years of coaching experience and a deep understanding of performance training, I focus on safe form, measurable progress, and long-term results — not just quick fixes.


Areas of Expertise

  • Nutrition
  • Strength Training
  • Weight Loss
  • Muscle Gain

NCCA Accredited Certifications

NASM Certified Personal Trainer

Who I Especially Like Working With

Beginners, Bodybuilders, Men, Overweight/ Obese, Student-athletes, Youth

I’ve been following Corey's training tips for a few months and my lifts have skyrocketed. I went from a 185 squat to 245! This page is gold.

Jenna R.

Corey isn’t just strong, he explains things in a way that just clicks. Great for any lifter trying to level up.

Tyler S.

Stuck at 275 forever — used his paused bench tip and hit 295. Game changer.

Shawn E.

Bought the analysis and Corey spotted a flaw in my deadlift instantly. Fixed it and hit a new PR a week later.

Logan W.

I never thought I’d look forward to workouts, but Corey made training fun and effective. I've dropped 15 pounds and feel stronger than ever. Highly recommend for anyone serious about real results.

Emily R.

As someone new to strength training, I was nervous. My trainer explained everything clearly and helped me build a solid foundation without getting injured.

Santi T.

My trainer took the time to understand my goals and lifestyle. I’m down 8% body fat and eating better than ever. Highly recommend.

Priya K.

CJ knows his stuff. I went from a 225 bench to 275 in 3 months with his programming. His feedback on form videos was super detailed and helped me lift more safely and efficiently.

Jason M.

I’ve tried a few trainers before but never got results like I have with Corey. My squat form improved, I’ve gained noticeable muscle, and I feel more confident in the gym than ever.

Amanda K.

Corey's communication is very good. Anytime I had a question or needed a tweak to my program, he responded fast with clear, helpful guidance. Highly recommend!

Brandon T.

As a full-time nurse, I needed a flexible program that still worked. Corey tailored everything to my schedule, and I’ve been getting stronger every week. Super grateful!

Lisa R.

My bench went from 185 to 235 in just 2 months with Corey's help. He's very knowledgeable in the compound movement space, great for powerlifters or bodybuilders.

Eric S.

Corey doesn’t just send a plan, he actually checks in, watches my videos, and keeps me on track. I’ve lost 12 pounds and feel stronger than ever.

Katie H.

I’ve tried a few online coaches, but Corey stood out. Easy tracking system, fast video feedback, and my physique is the best it’s ever been. Worth every penny.

James R.

Helped me rebuild my relationship with the gym. He’s supportive, doesn’t overcomplicate things, and genuinely wants his clients to succeed.

Nina V.

I’m training for my first powerlifting meet, and CJ built a program specifically around my weaknesses. The RPE guidance was spot-on.

Zach L.

Before working with Corey, I was just doing random workouts. Now I follow a structured program, and it’s night and day. I’ve added 80 lbs to my deadlift.

Chris J.

I’ve had online coaches before, but CJ’s feedback is next-level. He actually watches your lifts and gives breakdowns like a real coach should.

Julian F.

I’ve been lifting for years, but Corey helped me break through plateaus I never thought I’d surpass. My bench and deadlift numbers skyrocketed

Jason R.

Signed up to get ready for my first meet and crushed it. Corey taught me comp rules, walkouts, bracing, everything. I hit new PRs on the platform with full confidence.

Mike T.

After knee surgery, I was scared to lift again. Corey rebuilt my confidence and strength gradually and safely. I’m now stronger than before my injury!

Karla S.

Every week, the plan is tailored to how I’m feeling and progressing. Corey actually listens to your feedback and adjusts accordingly. Huge results in just 8 weeks.

Bryan D.

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