Now Available: Streaming Online Workouts JJF on Demand!
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Get The Body & Confidence You Want

Train SMARTER, Not Harder In Just 30 Minutes

Introducing JJF on DEMAND - an online subscription-based workout program that focuses on high intensity interval training in just 30 minutes a day.

Try JJF on DEMAND - Get 14 Day Free Trial

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What is JJF on DEMAND?

JJF on DEMAND is a program I developed to help women transform their bodies through the most effective fat-burning method: HIIT training. Each workout is designed to blast fat and build lean toned muscles with minimal equipment. You train SMARTER in LESS time, so that you can still watch Netflix, have a social life, AND save those dollar bills.

Burn More Calories AF

Killer Cardio + Muscle Toning = Afterburn Heaven! Or, in scientific terms...excess post-exercise oxygen consumption. If you ask Alexa (or Siri), it basically means you’ll be burning more calories even after the workout is over!

No More Excuses To Get It In

You got shizz to do, that’s why HIIT30 can be accessed anytime, anywhere. Use whatever device you’d like to stream your full-length workout videos. Plus, you’ll receive a downloadable PDF for easy travel and convenience.

Join The Tribe

When the struggle gets real, vibing with like-minded women helps you realize you’re not alone on this journey. You’ll get exclusive access to the HIIT30 membership site plus a private FB group to post your sweaty selfies and find much needed inspiration.

Who Am I?

I’m Jenny Jaucian, or Jenny J Fitness for short. I'm a nationally certified Personal Trainer, Group Fitness Instructor, Nutrition Coach, and Online Entrepreneur based out of Los Angeles.

For the last 6 years, I've helped hundreds of people lose weight, get in shape, and fall in love with fitness, whether it was live in my classes or in one of my online challenges. 

I've been featured in many fitness videos such as PopSugar, Beachbody Live, Cyberobics, and XR30 to name a few. 

I'm passionate about helping women find happiness and confidence within their bodies. My mission is to help as many ladies as I can slay their fitness goals and feel amazing in their skin.

Learn More

Access Anytime, Anywhere


Get your workouts delivered anytime, anywhere, on any device! You'll be able to live stream my workouts and download the PDF guides from home, at the gym, or on vacay! New workouts are uploaded each week to keep things fresh and exciting!

New Workouts Every Week

All you need is a set of dumbbells and a mat and you're good to go! Each workout is designed to help you transform your physique, increase your metabolism, and challenge your fitness to get stronger, healthier, and leaner!

Bonus Videos

Bonus section that includes videos to help you MOVE (foam rolling techniques, exercise demos, etc), NOURISH (clean eating tips, meal prep help, etc), and THRIVE (wellness rituals, goal setting, etc).

Exclusive Access To Online Community

You'll get exclusive access to our online community Facebook group, where we share progress updates, sweaty selfies, and so much more!

"I have been fortunate enough to work with some of the best personal trainers that Los Angeles has to offer and Jenny stands out. I am beyond grateful for her knowledge and ability to help me reach my fitness goals while knowing my limits and how far she can push them. She is energetic, motivating and keeps the intensity high giving you optimal results. You will not be disappointed with Jenny J’s workouts!"


"Jenny’s workout had me sore for days! It is a full body, high-intensity cardio class and if you know me, I do not like cardio. BUT, Jenny kicked my butt and I enjoyed every minute of it. I’ve been hooked ever since!"


"I DEFINITELY owe it to you for getting me into the habit, actually KEEPING IT, and helping me discover ways to personally hold myself accountable, so thank you again SO much!! I think I'm really in for the long haul this time :)"


"I can’t say enough about taking classes with Jenny. Her Cize Dance class is my favorite workout of all time! I have worked out my entire adult life, but it’s always been a struggle to get to the gym and I go more out of obligation to my body and my commitment to fitness, rather than actually enjoying the process. With Jenny’s classes it’s the exact opposite. I look forward to taking her classes every week because they are so FUN!! It doesn’t even feel working and by the end I’ve worked up a major sweat. So it’s a win win! I highly recommend her classes if you want to have a great time while burning all kinds of calories!"

Mahogany G.

"I can totally do it AND I can do it at home. I love that I can HIIT it hard at home. PLUS you include music which I love. Outstanding Jenny J!"

Marisol D.

100% Satisfaction Guaranteed

JJF on DEMAND will give you “after pic”-worthy results, as long as you do it. However, if you aren't crazy about it, you can cancel anytime or get a 100% money back guarantee within 30 days of your 1st month.


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