Urban Challenge, Cardio Boxing, Teen Boxing, TRX...come in and try one!



Our boutique training facility and studio create positive environments where there are no attitudes and no judgements — so whether you’re an experienced fitness buff or a first timer, there is something for everyone at D& I Fitness.

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The D&I team has over 20 years collective experience in the fitness arena. Whether former competitive athletes or gifted individuals, our trainers have exceptional qualifications.  The D&I approach takes the personal training concept and applies it to a small group format. All programs are unique so they are never boring and never, ever repetitive.

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D&I Fitness offers something that you won’t get any where else — personalized training attention within a class atmosphere. We have tailored our class offerings to meet the needs of the local communities, and our flexible schedule ranges from 6am strength + conditioning sessions to a variety of after school classes for kids to evening kickboxing.

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I walked into D&I fitness in June. Four months after ACL/meniscus surgery and months of physical therapy. I was no longer injured, but definitely out of shape. Delon reviewed the PT’s report and created a exercise program aimed at helping me regain strength and flexibility. He adjusted my workout weekly keeping the sessions fresh and interesting. As I got stronger and more sturdy, increasingly more difficult exercises were added with frequency. Delon always checked how my knee was feeling and made sure stretching was an active component to my fitness regime. Four months later, seven since surgery, I’m back on the tennis court, and feeling stronger and better then ever! Delon is a very knowledgeable trainer who challenges you to your capabilities with every workout. He got me back on the court!

-Priscilla Goldman

After having my second baby I found it impossible to get the extra weight off. I worked out regularly and still could not get back in shape. I started resenting the gym and my body. Delon has taught me to push my body while trusting its strength. 6 months later I am in better shape than before I had kids and I love working out again!

-Karen P.

Thanks again for another great class! I really appreciate all your encouragement and the kindness, thought and expertise you put into each and every class. It’s always a fun (even at 6 am) and challenging experience! Because of you, I continue to feel better and stronger all the time. I look forward to more fun this Spring and Summer.

-Kitty (AKA The Beast of South Orange)

I’m an absolute fitness fanatic and have been training with Delon for almost ten years. He consistently amazes me – not only with his ability to create fresh challenging and effective workouts, but also by his talent for spotting an injury or weakness and offering solutions to work through/with them.

-Rebecca Brooks, President The Brooks Group PR

D&I Fitness is amazing. Delon and the trainers are dedicated to providing clients with a structured workout that challenges you and is body changing! I love it there!
-Lauren O.

D&I Fitness is an amazing addition to our community. I guarantee that once you try one of Delon’s classes — you’ll be back! Delon can help you achieve your fitness goals and his changing workouts are guaranteed not to bore you. I have witnessed first hand Delon’s ability to tailor workouts to meet the needs of each participant. He is an amazing instructor, coach and motivator. I had never participated in Muay Thai before and have become hooked. The best part of all is that this amazing facility is right here in our community — minutes from home.
-Reggie T.

I had never had time for a personal trainer and just felt it was really not my lifestyle as I work a bunch. First off, to spend a bunch of money, I must be impressed. Lots of personal attention. Here the trainer goes the extra mile. I lost 33lbs and I have 10 more to go!
-Mary T.

I started with D&I fitness in February injured and out of shape. Delon adjusted my exercises and added specific exercises to my program to help me regain strength and flexibility. Few months in, I’m able to perform most exercises and feel stronger and better then ever! Aside from being a great guy, Delon is a very knowledgeable trainer, challenges you to your capabilities and keeps his workouts varied and fun! No class is ever the same!
-Sharon Kaufman-van Ommeren

Delon is the best. I’ve worked with lots of different trainers and have never enjoyed it as much as I do at D&I Fitness. The workout is so hard, it’s different every time and Delon has such a nice way about him. It’s the best workout around. And he does great classes for kids. My 8 year old son hates everything besides video games and kickboxing with Delon. We are lucky to have D&I Fitness in South Orange.
-Janet C.

I’ve worked out with a few trainers and I have to say, Delon Nelson is the absolute best! He motivates and excites his classes to get the best results. You lose weight, build muscle AND confidence. As soon as my daughter is old enough, I’m enrolling her! Do yourself a favor and try a class out!
-Jaime I.

D&I ROCKS! As everyone else has said – I am addicted and you will be too if you try one class! Delon is an amazing instructor who keeps you motivated. No class is ever the same so it’s easy to stay interested!! TRY A CLASS…you won’t regret it.
-Debra Gero Schiff

D&I is a great gym with a great trainer, Kru Delon. Its a easy going atmosphere where you will get the workout of your life that is fit to your level of fitness. The people are friendly and the Muay Thai is addicting. Im hooked!