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Janson Mammosser

NASM Certified
Associate’s Degree in Applied Sciences
CPR & First Aid
Kickoff Certified

Specialties

Losing fat
Toning muscle
Building Muscle
Racing & Endurance
Overall Health
Fat loss
corrective exercises
strength training
and sports training

My Mission

My mission is to help clients achieve their goals and improve their overall health and wellness. After losing over 250lbs coming out of high school, growing through many physical, mental, and emotional obstacles, my passion for health and wellness has continuously increased. No matter what, where, or when, we all deserve health and wellness and I am here to walk alongside you in our journey.

Nothing changes until we decide to change ourselves.

Why Train With Me

My clients’ testimonials consistently highlight my unique and personal connection I make with them, this allows for deeper impact and life-long changes. My clients know I care for them and that I seek the best for them while allowing vulnerabilities to present themselves and then be worked through.

My go-to workout

I enjoy hiking during the summer and swimming during the cooler seasons! Leg day and Back are favs!

Healthy food I love

I love stir fry, sushi, homemade pizza, and many Mediterranean foods!

Healthy food I hate

I can’t say I hate any healthy food in particular but turkey and I have a unique relationship!

Why Train With Me

My go-to workout

I enjoy hiking during the summer and swimming during the cooler seasons! Leg day and Back are favs!

Healthy food I love

I love stir fry, sushi, homemade pizza, and many Mediterranean foods!

Healthy food I hate

I can’t say I hate any healthy food in particular but turkey and I have a unique relationship!

Favorite workout music

I enjoy classic rock, Rap/Hip-Hop, and audiobooks while working out!

What people are most surprised to learn about me

People are most surprised that I weighed 400lbs, as well as my passion for service to others.

How it works

Let’s reach your fitness goals together.

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.

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.

Keep doing your favorite sports and activities. We’ll mix ‘em in to your plan.

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.

Txt me often plz k thx

The Best Plan for You

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

Kickoff
- Daily guidance & unlimited text with your dedicated trainer
- Daily custom workouts
- Custom nutrition coaching & optional daily meal plan
$2/day
First month only $70 - subsequent months $95
Kickoff Live
Recommended
- All of Kickoff standard, plus:
- Weekly 1-on-1 video workout/ strategy chat with your coach
$7/day
First month only $220 - subsequent months $245
Kickoff Live+
- All of Kickoff standard, plus:
- 2 Weekly 1-on-1 video workouts/ strategy chats with your coach
$11/day
First month only $340 - subsequent months $365

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

"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

"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 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’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

"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

"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

"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