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Designed for Simplicity

Just 45 Minutes A Day

5-day training split, with each muscle-group trained on separate days. This approach allows for multiple exercises per body-part, a higher quality of work, and ultimately more muscle. 

Step-by-Step Coaching

Every resistance band exercise in the TA2 Build program is demonstrated on screen with proper technique. You’ll know exactly what to do on every set.

Ultimate Convenience

With TA2 Build, you not only get results fast, but you have the freedom to train anywhere, anytime – at home or even on the road. Your bands and your phone are all you need!

Backed by real Science 

With over 25 years of experience, James Grage has worked with some of the top trainers in the world to create this revolutionary muscle building system.



  • Undersun Resistance Bands Set
  • FreeDoor Anchor for Bands
  • Complete 90-Day Workout Program
Get Started


TA2 Users, from all age ranges, all around the world, are crushing their goals and improving the quality of their lives! Now it's your turn!


David Morin

Age 45

I've worked with free weights for 20 years. Now that I'm in my 40s the health of my joints is priority number one! Undersun Fitness bands help me maintain my hard earned muscle WITHOUT the harmful impact of excessive & repeated free weight training. I highly recommend Undersun Fitness bands as an essential tool to obtain & maintain results.

Jeff Lenzi

Age 52

my tendons and joints feel better than ever, and because I enjoyed working out with these bands so much, I got into a great workout regimen and brought my weight down to 203 pounds, I’ve never felt better, I am much leaner and have a lot more definition in my physique! Also, I have purchased all of under sun fitnesses work out programs, and I have achieved gains from each and every one.

Alan Anthony

Age 60

Since starting with the Undersun Bands about 6 months ago my muscle gains and fitness have gone to the next level. At 60 years of age and having a busy life, like most people , the bands give me a quick , thorough workout in 25 minutes and produce fantastic results!

Eric May

Age 47

I feel like I am getting a gym workout in my office, outside any place I can. My family is important and so is my time and Undersun gave me what I was missing in strength training and fitness. I will be 47 this year and I feel amazing. I started really at the end of 2019 and I can't wait to see my progress over the next year.

Better than free weights

UNDERSUN Strength Bands offer the same muscle-building benefits as barbells and dumbbells, plus a host of other features.



  • Undersun Resistance Bands Set
  • FreeDoor Anchor for Bands
  • Complete 90-Day Workout Program
Get Started


TA2 BUild Program

  • Complete 90-Day Workout Program
  • Build Muscle & Strength 
  • Workout Anywhere
Get Started

Are Resistance Bands for you?

Answer a few short questions about your current training, and we'll give you an overview of Resistance Band Training to see if it's a good fit for you too!

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