Middle-aged Weight Gain?

Is a Slower Metabolism Really to Blame?

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14 Days for $14

Explore the TK Flex features & track your progress!

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Create an account and subscribe to one of our workout programs.

Choose the program that’s right for you

Do it yourself by creating your own workouts from our library of videos, or choose to challenge yourself and be as efficient as possible with Kristen as your personal online trainer.

Access Kristen’s premium workout videos

Easy to follow video demonstrations of each exercise, with tips to challenge you and suggested modifications to start.

Practice anytime, anywhere

Our workouts are designed to travel. You don’t need any fancy equipment, just the desire to move!

It was while pursuing what I thought was my passion that I discovered my true passion.

Being an athlete, I always thought I would work with athletes. It just made sense. So, I began working towards my Master’s Degree in Exercise and Nutritional Science. That’s when I realized that working with injured professionals was a noble venture, but it was not my personal calling.

What I really longed to do was to work with everyday people. I wanted to educate on the importance of movement, strength, and flexibility for everyday life so you feel good physically and feel great about yourself! I absolutely LOVE what I do every day and don’t even consider my job a job.

I wake up pumped every morning, excited to share my experience, expertise, and enthusiasm with regular people… just like you!

Kristen’s Philosophy

I believe strongly in the power of movement and the role it plays in our physical health, emotional health, and our overall well-being. There are thousands of ways to move the body.

I want to find out what excites you! If you are doing something you enjoy, you are much more likely to be consistent and stick to your workout regimen.

The “TK” Approach

  • Find the movements and formatting you enjoy
  • Stay safe as well as motivated and inspired
  • Keep going to achieve the results you want
  • Mix things up
  • Try new things

New movements “shock the body” causing it to burn more calories both during and after your workout and build up those muscles to rev up your metabolism. Plus, then you can say you tried Pilates, achieved that box jump, or used that park in your neighborhood for the first time!

Are you ready to get this party started?

Check it out!

Not sure what to expect? Take a look at these free sample videos of Trainer Kristen.

$ 49.00 /mo

TK Flex

All the options and motivation

TK Flex Training

Monthly Access Subscription
  • Access TK’s video library of more than 750 videos
  • Access to TK’s online forum with recommended workouts five days a week!
  • Save your favorite workout playlists of videos
  • Track your progress online
  • Earn badges for milestones
  • TK Nutrition via email

$ 149 /mo


Pick the 30-day program for you!


30-Day Program with Extra Time!
  • One time fee. No recurring payment.
  • Select one of several 30-day programs.
  • Extra time to complete your program, because life happens!
  • Monitor and track your progress online.
  • HIIT, Strength Training, Core Work, Stretching, Pilates, and Yoga
  • Access to TK’s online forum & workout library

$ 250 /mo


90-Day Online Personal Trainer


90-Day Online Personal Trainer
  • Workout Program based on your detailed questionnaire
  • A 90-day plan created just for you 30 days at a time
  • Monitor and track all your progress online.
  • Held accountable by Kristen and provide your feedback
  • 3-month minimum membership
  • Access to TK’s online forum & workout library

As Seen On...

TrainerKristen Testimonials

Read what others have to say about training with Kristen!

Kristen is fun, encouraging, and motivates me to get moving every day! I feel better and my clothes fit better after 6 months of Trainer Kristen’s workouts.

Lacy R – TK90, TK30 & Challenges

I feel so lucky to have been introduced to Kristen and her TK90 program at what was really just the perfect time.  After I had my second child, I was struggling (haha to say the least) to find a way to get working out back into my day to day.  Before her program, I was disappointing myself each time I promised myself to go run/workout but then couldn’t make it work. When my friend told me about Kristen and I first spoke with her, it just felt immediately like a fit.  I truly feel no other program could fit more perfectly into my routine. With two kids and working full time, her program allows me to work out each morning in my living room (sometimes very early and often without even having to put on shoes). She built a program that slowly but consistently got me back into working out first 3, then 4 and now 5 days a week.  Her emails after I mark a workout completed holds me accountable, and her approach is so motivating!  Kristen makes it fun and makes me look forward to my new videos.  I feel stronger every day, but even more important than the physical have been the mental and emotional benefits. I just feel better and more like “me” again.  Thank you Kristen for what you do for all of us. It makes such a difference.

Kelly G – TK90 & Spring Challenge

I love the plie series. I’m sad the challenge is over. I definitely feel stronger and more toned!

Brie N – DIY & Spring Challenge

I started Kristen’s TK90 Program in summer of 2019. I was never consistent with exercise and I never found something that was really fun to keep me going. NOW I sometimes even get up earlier to do my workout despite the fact that I‘m not a morning person at all! My goals were to get healthier overall, lose some weight and gain strength for ski season in Switzerland! I have gotten much stronger, I have lost more weight than I ever thought I would lose, and my skiing has been awesome this season! I feel better, healthier overall and have more energy too!
Kristen provides a great, customized workout program especially for me and my needs and motivated me from the beginning to keep going and try new things. She gives me feedback on all of my comments on the workouts and she had become part of my daily life despite the fact that we live on different continents!
What’s unique about Kristen is her positivity, her smile, and her passion. To be honest, I was not sure if online training was going to work for me, but I tried and it is so much fun and so easy to do. You don‘t need much space or time and you don’t even need to leave your flat. That makes it really easy to do your workouts every day. I really appreciate Kristen’s daily feedback and how she supports and motivates me. I just love her videos and that she also shares parts of her life with us on these videos too! She always gives suggestions for modifications and helpful tips. Also, the variety of videos is just awesome!
I think you just have to try it out and see for yourself how easy it is to move regularly. Even if it is just a short workout, it feels so good to do something and to see how you‘re doing better and how it gets easier every week. After the first workout, which contained a lot of squats, I could barely walk the next day and now I‘m doing sometimes some squats just for fun while waiting for a tram!

Corinne B – TK90 & Challenges

Best 12 days of my 36 days of quarantine! Noodles for legs. Thanks for a great Challenge, Kristen!

Andrea H – TK90 & Challenges

Kristen and I go back 5 years now – when she started training me in person in preparation for my wedding. We reconnected last year when she kicked of her website with a Challenge. I participated in the Challenge then started her online program right after!
I needed something to ramp up my workout routine and also keep me accountable. The TK90 program was exactly what I needed to start working out 6 days a week and to make it part of my routine! Kristen is great to work with in person and through her online programs. She makes each workout fun and reminds you why you’re doing it!
I completed by TK90 program and have been doing the basic DIY training for a few months now and am proud of the results. I have become much stronger and seen a couple inches fall off in the process! It’s also been impactful for my mental well-being.
Needless to say, the TK90 program is one of the best investments I have made for myself both physically and mentally. I highly suggest it as well as the DIY subscription!

Elise S – TK90 & DIY

TrainerKristen.com came along at the PERFECT time for me!  In the past, I had always been able to find the time to go to the gym or make it to a class, but between work and being a mom to my 4 year old who started school this year, it was getting way too easy to make excuses!  I absolutely love the flexibility that this program gives me.  I don’t have to leave the house to get in a great workout whenever it works best for me.  And Kristen is just the best!  So energetic and encouraging and supportive and a really great trainer.  I’m so grateful to have her in my life!!  

Tiffany A – TK90, DIY & Challenges

I love the format of this Challenge. I feel stronger and more motivated to work out every day. Improved confidence. Down 7 lbs and have more energy! ~ Winter Challenge 2020

Golbahar – DIY & Winter Challenge

I lost 4 pounds, I have felt less tension in my neck/back through the daily movement. Incorporating the walks outside helped me get my time in nature too, which is great for mental health as well. ~ Winter Challenge 2020

Heather B – Winter Challenge & DIY

I have nothing but positive things to say about Kristen and TrainerKristen.com!I did TK90 from July-September 2019. I have always been a healthy fit person who exercised regularly. After becoming a mom, I struggled with fitting my health and fitness goals into the equation.TK90 is a no excuses plan! Kristen adapts the program based on how many days a week you want to work out and what equipment you have. (I was in Hawaii an entire month with ZERO equipment, but I still checked in!) The difference between doing a home workout and TK90 is the personalization. You have to check in with her after completing workouts, which kept me accountable. She also checks in on you! Her workouts are quick and effective. After completing TK90 I realized that despite how busy life is, self- care has to be done. I feel more active and energetic, and I have prioritized fitting exercise into my daily activities.

I got my identity back with TK90! Thank you Kristen!

Olivia C – TK90

I love the Facebook group accountability and support system. The workout videos were not intimidating, even for someone who is out of shape. You are always so encouraging, even if you miss a day or screw up the diet. I lost 3 pounds and feel stronger inside. ~ Winter Challenge 2020

Jenn B

I lost weight, but more importantly firmed up, toned up and feeling like I got this! I didn’t realize how gluten was affecting my body. I also loved getting messages of encouragement from Kristen after completing the videos. That accountability! ~ Winter Challenge 2020

Kristina M – Challenges, TK90, DIY

When I started working out with Kristen, I needed someone to keep me accountable and encourage me to incorporate fitness into my life. As we’ve worked together over the last few years, I’ve become stronger and more confident in my abilities. I’ve set hard goals for myself, and I’ve achieved them. Kristen is encouraging, resourceful, and a wonderful teacher. Her enthusiasm for fitness not only is evident in her commitment to her clients, but also is contagious.

Courtney H – TK30, DIY & Challenges

I have been training with Kristen since 2015. She is always changing it up. I have lost 25 pounds, and she helps keep me there. My muscle tone is great, and the stretching exercises keep me loose. Her happy spirit and bright face always keep me looking forward to our workouts!

Eric S.

Her positive and kind approach has been very motivating. I feel more confident in the gym and definitely have tried things that I would never have done on my own. I feel stronger and she has inspired me to achieve my fitness goals.

Heidi W.

Since taking Yoga from Kristen, my joints feel better, and my energy has improved. I like the way Kristen designs the yoga around me, for example when I have an issue with a certain muscle she works that into the routine, impromptu! She is very knowledgeable about her subject. I enjoy working with Kristen very much!

Jeananne S.

I have been a client for 2 years. I began working with Kristen at 73 and had experienced limited success in sticking to an exercise regimen. I have increased my strength and flexibility. Balance is significantly improved. She works on core and stamina. In addition, she concentrates on areas that are problematic for her clients. My toes were stiff and tight. By stretching and concentration we have really opened them up. It may seem like a small thing but it has greatly improved my walking comfort and stability.

Joe Marie L – Training Client, Challenges, TK30

Kristen has been a life saver!! I came to her with a desire to continue my current vigorous cardio routine but knew that my posture and weak core were leading to a possible injury. She was able to, in just a few short weeks, increase not only my core strength but to help me gain full awareness how to approach exercises with my upper body. This has catapulted me into working out in a way I never thought possible! Her positive energy is ultimately the best part of my relationship with her!

Kamilia S.

I started with Kristen because my body felt tight, and not in a good way. Kristen’s weekly deep stretch sessions have made my aches and pains lessen. My stiffness has decreased and my range of motion has increased. I look forward to my stretch routine, sitting in each pose so that my body can relax and become stronger.

Kari H – Challenge & DIY

Pilates with Kristen makes me feel better all over. Though, there are always those days you don’t want to do it. Kristen’s encouragement, laughter and interesting questions always draw me back in!

Laree H.

I constantly struggle with my weight. Yet Kristen is always positive, motivating, and tough (when she needs to be), to help me get back on track with exercise and food management. We have been working together for years; but Kristen keeps our workouts fresh by having me try new things. I never would have tried Pilates or yoga without Kristen’s guidance! Plus, during times when I have had injuries, Kristen has helped me regain strength and flexibility. She truly is a rock star in my life!

Michelle R – Training Client, Quarantine Program, Challenges, DIY

I started working out with Kristen about 2 years ago. I have struggled with my weight for the past several years and needed desperately to lose the weight and get healthy. Having a consistent program that Kristen had created for me has worked wonders. I am happy to say, I am down 100 pounds and am continuing to lose weight. I can see a huge increase with my flexibility and I am eager to try new things. I have so much more energy and confidence within myself. I owe a lot of that to Kristen with her encouraging me and motivating me along the way. She makes working out fun and meaningful!

Stacey E.

I have worked with Kristen for many years and consider her both a trainer and a friend. My workouts with Kristen make me accountable so that I can’t push exercise to “later.” Kristen’s workouts are very client-specific and she is great at modifying them to “work around” limitations when needed. In addition to the physical benefits of the workouts themselves, Kristen is a born encourager. She is great about reminding me of what I have done and can do, rather than what I have not done.

Kitty H.

Kristen has been my trainer for 4 years – and this is the 1st workout I have actually stuck with! I love my sessions with Kristen. She is the perfect balance of challenging me while being very encouraging. I love the accountability of working out with Kristen and appreciate how much she cares about me being my very best.

Sarah H – Challenges

I have worked out with Kristen for over a year. She has helped me strengthen my core, work on my balance and increase my cardio. She is energetic, enthusiastic and well educated. Her individualized workouts bring variety to every session. She is quite simply the BEST!

Karen S.

Kristen has super knowledge and teaches that well. She has helped me greatly improve my lower body strength and stability. She also facilitated my rehabilitation program for bursitis in my shoulder. All of these things have improved my overall health and confidence! I also love to see what her hair will look like!


Joan D.

I love working Kristen. She is knowledgeable, positive and encouraging. She designs the program to meet my needs but gently pushes me to move beyond my comfort zone. I have become much more confident about my abilities after working with her.

Becky P – Training Client & DIY