Unlock Your Full Potential with RX Fitness FUEL
We help you achieve lasting wellness through expert nutrition guidance, fitness tips, and a supportive community.
Join RX FUEL Foundations membership, our FREE group of like minded individuals, for meal ideas, recipes, and accountability to take the guesswork out of nutrition.
Click Join Now for your free meal guide and exclusive invite!
MEET THE FOUNDER & CEO
Marley Oldham Carnes
The Dietitian Who CrossFits - helping you fuel your body, crush your goals, and achieve lasting results that make healthy living feel empowering and attainable.
I'm here to help you take the guesswork out of meal planning and create sustainable lasting results while not feeling miserable or left out.
In our RX Fitness Fuel membership we offer simple, sustainable nutrition strategies to help you feel your best—whether it's weight management, boosting energy, or improving mental clarity.
With over 15 years of experience I understand the unique needs of those looking to perform better and the impact nutrition can make on your health and feeling good in your day to day life.
Registered Dietitian Nutritionist: Expert advice and passionate in helping you build healthy habits that fit your lifestyle and keep you motivated.
CrossFit Level 2 Coach and NSCA Strength Coach: Specializing in fueling CrossFit athletes and gym-goers for maximum performance and recovery.
Master's Degree In Nutrition: Guidance backed by that empowering you to feel confident in your health decisions.
Be the best version of yourself, inside and out!
Designed to provide a strong foundation for your health journey, the RX Fitness FUEL Circle offers expert guidance, community support, and valuable resources to help you reach your goals. It’s the perfect starting point for connecting with others and getting motivated.
Here’s what you’ll get with our subscription program:
Monthly Meal Plans Tailored to Your Goals
Receive personalized meal plans that suit your unique needs, fitness goals, and dietary preferences. Each plan is designed to be realistic, sustainable, and effective for long-term success.
On-Demand Trainings by Marley Carnes
Access to on-demand trainings from Marley Carnes, covering everything from fueling for fitness and recovery to understanding the science of nutrition. Learn from a trusted expert who blends evidence-based knowledge with practical, real-life applications.
Exclusive Accountability Community Group
Join our RX Fitness Exclusive Network to connect with like-minded individuals who are on the same journey. Share your wins, ask questions, and get support from others as you stay accountable and motivated.
Ready to get started?
PRICING
Choose Your Plan
RX FUEL
Foundations
FREE
What you get:
Accountability through our exclusive network & Community Support – Connect with like-minded individuals and expert dietitians who are here to support your journey.
Ongoing Recipes & Meal Ideas – Never run out of inspiration! Access delicious, dietitian-approved recipes to keep you on track.
Tip Sheets & Handouts – Practical resources to make healthy eating effortless such as:
Protein Hacks & Snacks – Quick and easy ways to hit your protein goals.
Eating Out Tips – Navigate restaurants with confidence while staying on track.
How To Stay Motivated – Proven strategies to keep you focused and moving forward.
FREE no credit card required
RX FUEL
PRO
$27/m
What you get everything in the Foundations Membership, PLUS:
Ongoing Meal Plans – Access structured meal plans designed for performance, weight management, and optimal health.
Live & On-Demand Coaching Seminars & Talks – Get real-time guidance from expert dietitians, covering topics like fueling for workouts, metabolism hacks, and sustainable nutrition.
Unlimited Access to On-Demand Trainings – Learn directly from Marley Oldham Carnes, an industry expert in sports nutrition, performance fueling, and sustainable eating habits.
Exclusive Advanced Resources – Dive deeper with expert-level content, case studies, and pro-level nutrition strategies.
And More! – We’re always adding value to help you reach your health and performance goals!
NO monthly commitment
RX FUEL
ELITE
$97/m
What you get everything in RX FUEL PRO membership, PLUS:
45-Minute Virtual One-on-One Introductory session – Get started with a personal session tailored to your goals, led by a Registered Dietitian Nutritionist.
Added Accountability with Two Monthly Live Chat Check-ins – Stay on track with bi-weekly coaching calls to adjust your plan and keep you motivated.
Individualized Meal Plan – A customized meal plan based on your goals, lifestyle, and dietary needs for maximum results.
Exclusive Discounts – Get special pricing on supplements, labs, food sensitivity testing, and genetic testing to optimize your health.
And More Premium Perks! – RX FUEL ELITE is designed to give you the highest level of support and results.
Three month commitment REQUIRED ensuring your success!
Do you struggle with staying consistent, even when you know what to do?
At RX Fitness Fuel, we believe that true success in health comes from both understanding what your body needs and applying that knowledge consistently. Our memberships provides you with the tools, resources, and support you need to bridge the gap between knowing and doing.
RX Fitness Fuel steps in to ensure you are empowered with both the knowledge and the accountability to reach your goals.
Do you feel like you’ve tried everything but are still not seeing the results you want?
With RX Fitness FUEL, you’ll have a clear roadmap to your goals, whether you want to lose weight, improve athletic performance, or simply feel more energized. You’ll finally see the results you deserve.
Have you ever tried following a generic nutrition plan, only to find it didn’t work for your unique needs?
Upgrade to the PRO or ELITE memberships and unlock live group sessions and one-on-one live chat sessions with a registered dietitian nutritionist.
These plans offer you even more personalized nutrition strategies, custom meal planning, and direct support for more accountability and guidance to meet your goals.
Frequently Asked Questions
What is RX Fitness Fuel?
RX Fitness FUEL is a monthly membership coaching and meal planning program focused on helping you become the best version of yourself inside and out!
Is this a monthly subscription?
RX Fitness FUEL membership and meal plan program is a monthly subscription. That means you’ll get new content and fresh resources each month for as long as you are a member.
How do I access the resources?
Once you join RX Fitness FUEL, you’ll get a login and password to the private members' site. All of the videos, master classes, and handouts and resources are hosted there. Additionally, we have a Meal Planning software program to tailor you recipes and meals as well as an exclusive network where members can interact with each other.
How can I cancel my membership?
RX Fitness FUEL membership and meal planning program is an ongoing monthly program. If you want to cancel your membership, you can do that anytime in your payment preferences or email [email protected] if you need additional support. Keep in mind, you’ll lose access to all of the Master Classes, Resources, Live Sessions, and Exclusive Network.
With the RX Fitness FUEL, you’re stepping into a community where nutrition becomes second nature and your health goals become achievable realities.
Join now to get started today!
