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Juan Castillo

  • ACSM Certified
  • Masters in Nutrition and Exercise Physiology
  • Registered Dietitian
  • Kickoff Certified
Specialties
My Mission
My mission is to promote the importance of overall health and longevity in fitness. I began exercising in high school to build strength and muscle. This culminated in me participating in my university's bodybuilding competition during my senior year of college. That experience taught me a lot, and it made me realize there's more to physical health than "looking good." Now in my 30s, I still understand strength to be the basis of all physical function, but I make sure to pursue it intelligently, and I place an equal value on joint health, mobility, and quality of movement. In fact, I workout now as a way to continue to age gracefully. Ultimately, I believe exercise is a celebration of the body's ability to move, and being able to move more fluidly/powerfully/confidently is absolutely worth celebrating.
Quote
"The future depends on what you do today." -Gandhi
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Why Train With Me

A client should train with me because I have well-rounded experience and I'm Ivy League educated. This includes specialized training in combat sports and hospital-grade knowledge of nutrition. In fact, I was a certified boxing trainer through the esteemed Gleason's Gym in NYC, and I'm a registered dietitian. As an experienced trainer, I offer more than prescriptive programs. I save you time by helping you avoid common mistakes, and I'm personable enough to keep you motivated over time.

My go-to workout

Weightlifting, followed by boxing and a 30-min run with the headphones on, listening to a podcast.

Healthy food I love

Greek yogurt parfait with dry oats and berries (blue-, black-, and raspberries).

Healthy food I hate

I love most foods. That said: papaya.

Why Train With Me

A client should train with me because I have well-rounded experience and I'm Ivy League educated. This includes specialized training in combat sports and hospital-grade knowledge of nutrition. In fact, I was a certified boxing trainer through the esteemed Gleason's Gym in NYC, and I'm a registered dietitian. As an experienced trainer, I offer more than prescriptive programs. I save you time by helping you avoid common mistakes, and I'm personable enough to keep you motivated over time.

My go-to workout

Weightlifting, followed by boxing and a 30-min run with the headphones on, listening to a podcast.

Healthy food I love

Greek yogurt parfait with dry oats and berries (blue-, black-, and raspberries).

Healthy food I hate

I love most foods. That said: papaya.

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Favorite workout music

Rap (mostly '90s and 2000s, but new stuff too), house music, or nu metal (love me some Linkin Park).

What people are most surprised to learn about me

I gave my first tattoo when I was 15 years old, and have been tattooing on-and-off ever since.

How it works

Let’s reach your fitness goals together.

1

Start with your perfect coach

Get started with your trainer based on goals and personality. Build your plan together with during your Kickoff video call.
Perfect Coach
2

Add daily personalized workouts & nutrition plans

Work out when and where you want with step by step guidance from your coach via our interactive app. Eat well with meal plans crafted by your coach just for you.
Bike
Keep doing your favorite sports and activities. We’ll mix ‘em in to your plan.
Workout Video
3

Reach your goals with daily checkins

Stay on top of your fitness goals with check-in texts and at a glance in our app. Your coach is there for you on demand, whenever you need.
Love
Txt me often plz k thx
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Text Messages

The Best Plan for You

No hidden fees. Unlimited workouts, meal planning, & support. Change your trainer any time.

  • Kickoff
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      Daily guidance & unlimited text with your dedicated trainer
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      Daily custom workouts
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      Custom nutrition coaching & optional daily meal plan
    $2/day
    Billed once a month as $95
  • Kickoff Live
    Recommended
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      All of Kickoff standard, plus:
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      Weekly 1-on-1 video workout/ strategy chat with your coach
    $7/day
    Billed once a month as $245
  • Kickoff Live+
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      All of Kickoff standard, plus:
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      2 Weekly 1-on-1 video workouts/ strategy chats with your coach
    $11/day
    Billed once a month as $365
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Client stories

"Before finding Kickoff, I wasted so much time sitting in my car at the gym trying to google the "best" workout for the day. Now I never fret over workouts - they're sent to me with clear instruction in the Kickoff app. Working with my trainer via text has been such a benefit. Having that accountability was key - I beat my goal by 10 lbs, losing 40 lbs before my wedding day!"
Peyton
Texas
"Before finding Kickoff, I wasted so much time sitting in my car at the gym trying to google the "best" workout for the day. Now I never fret over workouts - they're sent to me with clear instruction in the Kickoff app. Working with my trainer via text has been such a benefit. Having that accountability was key - I beat my goal by 10 lbs, losing 40 lbs before my wedding day!"
"Working with Kickoff is awesome! It has helped me learn so much about what it takes to transform your body. I have lost 23 pounds and 5% body fat since working with Rachel and I've never felt better!"
Augie H.
Florida
"Working with Kickoff is awesome! It has helped me learn so much about what it takes to transform your body. I have lost 23 pounds and 5% body fat since working with Rachel and I've never felt better!"
"I have loved every single week of Kickoff. As a busy, working mom, I don't like leaving my home & family to go to the gym. My trainer Jen designs workout plans for me that work with what I have at home. She levels me up in strength when I'm ready & adjusts when I'm not feeling my best. Kickoff is realistic, sustainable & supportive. That's why it's been so successful for me!"
Miriam C.
Oregon
"I have loved every single week of Kickoff. As a busy, working mom, I don't like leaving my home & family to go to the gym. My trainer Jen designs workout plans for me that work with what I have at home. She levels me up in strength when I'm ready & adjusts when I'm not feeling my best. Kickoff is realistic, sustainable & supportive. That's why it's been so successful for me!"
"I lost 70 pounds of fat (265 to 195) and am keeping it off with Kickoff! I’m now adding muscle and getting stronger! My coach makes it fun and straightforward to stick to an awesome exercise and nutrition program that really works."
Giancarlo R.
Georgia
"I lost 70 pounds of fat (265 to 195) and am keeping it off with Kickoff! I’m now adding muscle and getting stronger! My coach makes it fun and straightforward to stick to an awesome exercise and nutrition program that really works."
"I’ve lost 25 lbs with Kickoff and have gained a tremendous amount of strength and confidence. Thanks to Kickoff, I was able to tweak my nutrition & really see a noticeable difference all around including my energy levels. I am finally feeling like myself again!"
Brooke H.
California
"I’ve lost 25 lbs with Kickoff and have gained a tremendous amount of strength and confidence. Thanks to Kickoff, I was able to tweak my nutrition & really see a noticeable difference all around including my energy levels. I am finally feeling like myself again!"
"My body fat decreased by 5.3% & is now 17.8%. I lost about half an inch in my waist, hips, and thighs. It's easier for me to get in the gym and complete a workout when I don't have to stress about actually planning the workouts. I love how supportive and flexible my coach has been. Kickoff has become a welcome constant amongst the chaos of everyday life."
Ashley B.
Alabama
"My body fat decreased by 5.3% & is now 17.8%. I lost about half an inch in my waist, hips, and thighs. It's easier for me to get in the gym and complete a workout when I don't have to stress about actually planning the workouts. I love how supportive and flexible my coach has been. Kickoff has become a welcome constant amongst the chaos of everyday life."
"As a mom of 4, Kickoff has been such a blessing to me! Not only has it has helped me learn to eat and how to focus on different areas of my body, but it has also helped me gain more self confidence! My trainer is able to base my workouts off of what equipment I have at home, and I don't have to be a part of a gym!"
Nicole H.
Tennessee
"As a mom of 4, Kickoff has been such a blessing to me! Not only has it has helped me learn to eat and how to focus on different areas of my body, but it has also helped me gain more self confidence! My trainer is able to base my workouts off of what equipment I have at home, and I don't have to be a part of a gym!"
"I'm loving the accountability piece that comes with Kickoff. My clothes fit much better. My coach has been great in helping me figure out macros/nutrition, and the workouts have been great. I'm impressed with how my strength has improved over the past weeks - it means the world. Fitness was a big part of my earlier years, and it's been huge to get back in shape! Thank you Kickoff!"
Marsha R.
Canada
"I'm loving the accountability piece that comes with Kickoff. My clothes fit much better. My coach has been great in helping me figure out macros/nutrition, and the workouts have been great. I'm impressed with how my strength has improved over the past weeks - it means the world. Fitness was a big part of my earlier years, and it's been huge to get back in shape! Thank you Kickoff!"
Peyton has incredible success with weight loss with his online personal trainer at Kickoff!
Augie has incredible success with weight loss with his online personal trainer at Kickoff!
Miriam got incredible results via her online personal trainer at Kickoff
Giancarlo has incredible success with weight loss with his online personal trainer at Kickoff!
Brooke got incredible weight loss results with her online personal trainer at Kickoff!
Ashley got incredible results with her online personal trainer at Kickoff!
Nicole got incredible weight loss results with her online personal trainer at Kickoff!
Marsha got incredible weight loss results with her online personal trainer at Kickoff!

Client stories

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