Starting fresh, or starting over?
Most programs assume you're already there. Base Builder is the guided 6-week foundation that actually gets you there, so the habits, the technique, and the strength you build this time feel like yours to keep.
Starting over shouldn't mean starting alone.
Base Builder is a guided 6-week strength program for people starting fresh or coming back to it. We build your foundation the right way, with the habits, the technique, and the base strength, so it finally sticks.
Feel capable in your body again.
Base Builder is a guided 6-week strength program for people starting over or starting fresh. We build your foundation the right way, with the habits, the technique, and the base strength, so this time it sticks.
Built for real beginners and people coming back to it. No getting thrown into someone else's program.
One coach. Six weeks. The part most programs skip.
Your foundation. Built the right way.
Sound Familiar?
Getting back into training after time away feels heavier than it should. You're carrying the memory of how it used to feel, and the frustration of programs you started and didn't finish. Or maybe you've never trained at all, and you just want a solid place to start without feeling behind.
Here's what I've learned after 10 years of coaching: the people who stopped weren't the problem. They were given programs that weren't built for them. Too advanced, too vague, too generic to fit a real life. That's what I set out to fix.
This Is Base Builder.
A 6-week foundational strength program delivered through the Trainerize app and coached by me. It's built around the idea that the first 6 weeks of training should teach you how to move well, build real strength, and create a training habit that actually sticks.
Structured Programming
3 sessions a week, about 60 minutes each. A smart 6-week progression that starts manageable and builds strategically from there.
Video Demos & Coaching Notes
Every exercise has a video demonstration and clear instructions. You'll never wonder if you're doing it right.
Real Coaching Support
Direct messaging access through the app. Not a chatbot. Not an FAQ page. Me. Questions, modifications, whatever you need.
Personalized to You
Program assigned based on your experience level and available equipment. Built for where you actually are, not a generic template.
Delivered Through the Trainerize App
Your workouts, coaching messages, progress tracking, and exercise videos all live in one place.
Your 6-Week Journey
Foundation & Technique
You're learning the movements and building a routine. Sessions feel manageable, maybe even easy. That's by design. This is where you build the base for everything that follows.
Volume Build
The work increases. Movements feel more natural and you'll start adding weight or reps. This is where most people have their "okay, I feel this working" moment.
Peak Week
The hardest training week in the program. Highest volume, highest effort. You'll surprise yourself with what you can handle compared to Week 1.
Deload & Benchmark
Volume drops, then you test. You'll see exactly how much stronger you've gotten. This is the proof that the program works.
What's Inside.
Here's what you'll see when you open Base Builder.
Six weeks. Three phases. Each one builds on the last.
You'll know what to do, what to use, and how to do it.
Build your strength, set by set, week by week.
Real workouts. Logged automatically as you finish.
Track how your workout felt. It helps me see how you're doing.
Try the first week of Base Builder on your own.
A real week from the program, delivered to your inbox.
21 Days to Decide.
Try it for 21 days. If you're not feeling it, email me and I'll refund every penny. No hoops, no hard feelings.
Meet Your Coach
Jason Barthold, CSCS, PN-1
I started Mind-Body Fitness because I was tired of watching people get chewed up by programs that weren't built for them. I believe training should be sustainable, evidence-based, and designed around the person in front of me. Not the other way around.
I've spent over 10 years coaching people through exactly the kind of moment you might be in right now. Whether you're starting fresh or rebuilding after time away, I've seen what works and what doesn't. And I built Base Builder around what works.
Every program I write is grounded in exercise science and practical coaching experience. But the part that actually matters is that I'm in your corner. When you have a question, I answer it. When something needs adjusting, I adjust it. That's what coaching means.
What Clients Are Saying
I have been training on and off with Jason for six years. He helped me get in the best shape of my life a few years ago and I am currently working with him to get back there. Jason is patient and understanding and works very well with his clients' limitations and abilities. He makes his workouts fun but challenging and makes you believe that you can do a lot more than you would expect. I would recommend him as a trainer to anyone.
What I like about Base Builder is that it's personalized to my specific goals for strength, conditioning, and improving my cardio fitness. Each week the workouts build on the previous week. As a result I have definitely seen an improvement in my muscle tone and mobility with this progression program. I also like that there are embedded videos and instructions for ensuring proper form when I'm performing the exercises. This program has been very doable and successful for me. Would definitely recommend!
Common Questions
Quick Intake Form
Not Ready Yet? Try the First Week
of Base Builder.
A sample week from the program, delivered to your inbox. No commitment required.