Experienced tutor in Self defense in Chicago, Darnell offers private lessons tailored to your needs.

Coach d really takes the time to correct you and make sure your doing proper technique. Also with doing proper technique the workout is much better i really enjoy working with. The knowledge and passion he has for the sport of boxingis what I really appreciate. He can be like most instructors where they just show you a little. But with him I feel like he really wants you to get it

Coach D has a wealth of boxing knowledge and the patience of a good teacher! He is by far one of the best boxing coaches I’ve ever trained with. Five stars!

Coach D is awesome. I restarted my fitness journey after the pandemic hiatus and it was unnerving to get back into it as well as learn boxing for the first time. He assessed and tailored my workouts based on my level and helped me progress. He is a great motivator and coach, even on my down days to keep me going!

Coach is fantastic. He's a patient teacher, but he pushes and encourages improvement. I've learned so much in just a few months of lessons, and I've had a great time as well.

I like the combination of skill and physical fitness tied into these sessions. I’m constantly challenged and given expert level advice while training. I would suggest this to anyone regardless of fitness level.

Coach D is AMAZING!!! He is so patient and extremely informative. He has a true passion for boxing fitness and encourages me every time, not just in my workouts but I’m relation to life as well.

Darnell's personal training is really great. I was very big and too unmotivated and shy to go to the gym. I had Darnell as my personal trainer and now I noticed a positive change in my appearance. I am happy and now more confident with myself. I definitely recommend Darnell to anyone looking for great quality personal training. I know that I would never have achieved this at my size if not for the personal attention given in my training sessions. Darnell is always very encouraging and has a vast knowledge of his profession. I have lost 31 pounds due to the motivation given in our sessions. Thanks champ for the dedicated sessions that put a positive change in my life.

Teaches the techniques of boxing in a manner that makes it easy to perfect. You get an understanding of why you are doing certain drills.

The experience was personal and it was custom to my needs and limitations.

I enjoy working with Coach D at Institute of Boxing Biology. He will definitely push you, but also knows your limitations and shows patience with his teaching methods. I learn something new at each session, whether it be a new technique or general knowledge of the boxing industry. I recommend IOBB if you'd like to learn the ins & outs of the sweet science and/or want a killer workout.

Love that the equipment was accommodated for my 11 and 10 year old .The coach is amazing , my kids admire him. I recommend coach D .

You can order someone all day, you can also yell, or even boast someone's ego all day as well....But thats not a coach or trainer.

As a father of 2 young boys, it means everything when you find a coach/trainer with discipline and work ethic you want you child to have. Coach Darnell leads by example. His commitment to the development of my two young boys was profound, his technical training including focus on fundamentals was superb, and his innovative sessions kept my young boys intrested and excited about the sport. But what I found paramount was his mentorship. In short, what I liked about boxing biology was Coach Darnell, his professionalism and the pride he has for the title of Coach/Trainer.

I absolutely love Coach D! He has been training my son on and off since he was 4 years old. He is extremely patient and so talented. I truly couldn't ask for a better coach!!

He is an amazing coach. He has a lot of patience and really takes the time out to get to know your kid inside and outside the ring. His prices are very reasonable.

Coach Darnell is the truth!!! Being around boxing all my life I can truly say he is one of boxing’s most brilliant but undiscovered minds. From Technique,purpose,conditioning,little boxing history gems drop on you doing training Coach D is your man. A true student of the game and a real professional!!!

My over all experience is great! My family and I work out with Coach D for boxing fitness and we absolutely love it! We all started seeing results within the first week! But what we really love is that we're learning how to defend ourselves and get in shape at the same time in an awesome environment

Coach D is full of energy. Keeps you engaged and working hard. You never know what is coming next.

Anyone can slap at a heavy bag.

Coach D shows you the technique behind boxing so your form is tight and you maximize power and effort. And he does so in a patient and easy-to-understand way. Beside the technique, this is one heck of a workout. Expect to burn between 800 and a 1000 calories in an workout.