Our Instructors
Mandy Severson:
Studio Manager
Mandy fell in love with yoga her freshman year of college. From Bikram, to Hot Yoga, to Vinyasa Flow, she discovered how much time on her mat benefited her both mentally and physically. With a background of dance and a love for fitness, yoga has been the perfect balance to help build her strength and sustain her balance and flexibility.
After teaching kindergarten for 10 years in Greendale, Mandy decided to stay at home with her two children Ruby and Rowan. She immersed herself in her community of Whitefish Bay. She took on many volunteer roles such as Girl Scout Daisy Troop Leader, serving on the board at Community Preschool of Whitefish Bay as the VP of Enrollment, and acting as a PTO chair for Richards Elementary School planning and facilitating events for the school community.
In fall of 2023, Mandy and her husband Patrick decided to make their way back to the Green Bay area where they both grew up. Now that they live close to family, Mandy took the opportunity to take her love for yoga a step farther and enrolled in the 200 YTT course. Blending her passion for teaching and yoga, Mandy is thrilled to guide you through your practice placing emphasis on setting an intention and growing your gratitude both on and off the mat.
Tyler Brown
Hi, I'm Tyler Brown, and yoga has been a transformative experience for me. After completing my first Vinyasa Power Yoga class, I was hooked! As I continued practicing, I began to understand that yoga is much more than a physical exercise—it's an art that connects breath to movement. Each pose became a way to strengthen not only my body, but also my mind and spirit. A regular yoga practice has helped me grow into a better version of myself, bringing balance, focus, and presence into my life.
Having been involved in competitive sports my whole life, including playing for the St. Norbert College baseball team, I was accustomed to competing against others. It wasn’t until I discovered yoga that I learned the most meaningful competition is with myself—striving to be better with each passing day.
I received my yoga certification from Pedretti Power Yoga in 2016, and I’ve been practicing regularly for over 13 years. Yoga brings me to a place of gratitude, allowing me to embrace a positive mindset and appreciate the abundance in my life. This optimism fuels my desire to make the world a better place, and I hope that through our practice together, my students can cultivate a similar mindset of growth and gratitude.
Outside of the studio, I lead a fulfilling life with my family and career. When I’m not teaching, you can find me enjoying time with my wife, Alicia, and our three kids. I also enjoy cycling, hiking in nature, playing baseball, and listening to live music. I work as a Business Development Leader at AmeriLux Transportation and Logistics, where I strive to create win-win solutions with everyone I work with. I look forward to seeing you on the mat soon!
Rachel Thayse
Rachel first discovered Pilates in 2019 and was instantly hooked. What started as a workout quickly turned into her favorite way to move, recharge, and challenge herself. In July 2025, she completed her teacher training at Mimi Yoga in Miami and can’t wait to bring that same mix of energy, strength, and creativity into every class.
Movement has always been a big part of Rachel’s life — she grew up doing competitive dance, later got into strength training, and has carried a long passion for health, wellness, and fitness. Her classes put the focus on fun and form, helping you build strength while keeping things challenging, playful, and energizing.
Outside the studio, Rachel works in commercial real estate finance. A proud northeast Wisconsin native and St. Norbert College grad, she’s also a Door County enthusiast, avid traveler with her husband Justin, and completely obsessed dog mom to her dachshunds, Oscar and Vienna.
Hailey Wheaton
Meet Hailey, one of our newest instructors at Lifestyle Power Yoga! Hailey has been practicing yoga for just over a year, quickly falling in love with the connection between movement and breathing. Drawn to the practice as a way to slow down and connect more deeply to her body, she especially enjoys the strength-building nature of the Vinyasa, Fusion, and Pilates Classes!
Hailey brings an uplifting, joyful, and calm energy to each of her classes. Her goal is for students to feel empowered in their bodies and leave class carrying a wave of positivity that flows into the rest of their day.
When she’s not on the mat, you can find Hailey staying active—whether it’s hiking, walking, or lifting weights—or spending quality time with her church community, friends, and family. Originally from out of town, she has called Green Bay home for nearly four years, and shares it with her dog and cat.
Come move, breathe, and grow with Hailey in class!
Emily Albers Cunningham
Emily is grateful to have been practicing yoga for 15+ years and teaching since 2014 throughout Wisconsin and Southern California. Yoga has always been a source of peace for her, being one of the few activities that allows her to slow down her mind while strengthening her body at her own pace.
As an elementary educator, Emily has used yoga to help students self regulate and recenter. She truly believes peace begins within. Her goal for her yoga students is to leave feeling inspired, positive-minded, and strong. She sees herself as a yoga guide and loves when students listen to their bodies by either adding a challenge or holding back.
Outside of yoga, Emily enjoys looking for new murals and art around town, learning new hobbies, and spending time with her daughter. Emily grew up in De Pere and recently returned after about 5 years away. She is excited to meet you and share the joy of yoga together.
Nykki Milhaupt
Nykki is a dedicated yoga, barre, and Pilates instructor with over 15 years of experience in the practice of mindful movement. What began as a love for yoga has evolved into a lifelong passion for helping others cultivate both physical and mental resilience. As a strong advocate for mental health, Nykki emphasizes self-care and mindfulness, believing that movement is a powerful tool for healing, growth, and self-discovery.
In her classes, Nykki fosters a welcoming environment where students can explore their own journeys while building strength, flexibility, and self-awareness. With a focus on mental well-being through movement, she encourages her students to find balance both on and off the mat.
Outside the studio, Nykki draws inspiration from travel and spending time outdoors, finding joy in exploring new places and connecting with nature. Her teaching philosophy centers on guiding others to discover connection, inner resilience, and a deeper sense of peace within themselves.
Kristi Pennenberg
Kristi discovered yoga 10 years ago as a way to stay mentally and physically fit while trying to navigate working full time as a nurse practitioner and raising two tiny humans. She has a Bachelor’s degree in Biomedical Sciences from Saint Norbert College, as well as a Bachelor’s and Master’s degree in nursing.
Yoga has remained a huge part of her life. She has since taken on SUP (stand up paddleboard) yoga. After her yoga studio shut down during COVID, she was devastated, to say the least. Yoga is more than brick and mortar. She had began practicing virtually. She built her own studio in her basement!
When Lifestyle Power Yoga opened, she was there, since day 1, and has been here ever since! Having that in-person training back was so amazing. The sense of community brought her so much joy. She had decided to share this joy by becoming a certified yoga teacher (Yoga Project, 2022).
Aside from yoga, Kristi works as a nurse practitioner within our community. She is a full-time wife and mother of two children (and one fur baby). She enjoys traveling, dining, attending concerts, creating custom cakes and spending time with family and friends.
Kristi has combined her passion for healthcare and wellness by continuing to practice medicine and yoga. Yoga is essential for physical and mental well being. Yoga can be modified or amplified to meet everyone’s needs. Kristi invites you to practice with her on the mat!
Tiffany O’Day
Tiffany O’Day (Tiff) is a new yoga instructor who has practiced for 10+ years. She loves finding new places to practice during travels — Including many different countries!
She is passionate about sharing the joy of yoga for a healthy body and mind, blending global influences and dynamic flows into classes. Whether guiding students through energizing flows or restorative sessions, Tiffany inspires a deeper connection to breath, movement, and mindfulness.
Beyond yoga, she enjoys time spent with two wonderful adult children and sharing her mat with a beloved large four-legged dog - Skye- embracing balance and joy both on and off the mat.
Erica Gloeckler
Erica first found yoga freshman year of college and it quickly became her happy place. For 10+ years, practicing yoga has been an amazing source of self-care, making her stronger physically and mentally, and provided a space to set stresses aside and be present.
It is because of the joy that yoga brings that Erica became RYT-200 certified. Her hope is to share this same joy with you, through the challenges, mindfulness and growth that all happens in a yoga class!
Outside of the studio, Erica is a designer and illustrator, loves to be outside and going on adventures with her husband, Grant, and dog, Wilder.
Sue Zimmerman
Sue discovered the joy of Yoga from Allie, one of our fellow instructors. Allie inspired her to practice yoga twice a week to continue her love of running. The practice of breathing and stretching was extremely helpful. Eventually, Sue was motivated to become a yoga instructor. She started with Trauma Yoga, adventured into Yoga Ed for students then pursued her 200 hour YTT with Breathe for Change.
Sue also pursued her YTT due to working as a School Counselor and seeing the need for breathing and moving your body for mental health. Yoga has inspired her to teach summer school yoga for elementary students Kindergarten to 4th grade. It brings challenge to their movement but emphasizes the importance to pause and breath.
Sue was raised in DePere and loves to give back by guiding yoga practices. She makes the point to emphasize she guides the practice of yoga but encourages everyone to honor their body and do what they need for themselves. At the end of all practices, Sue implements setting an intention for the week while settling into a calm state. She would love to guide your health journey with yoga
Allie Pedretti
I have always been passionate about health and wellness! I was diagnosed with scoliosis in my teens and could barely see my big toes by the time I reached my 30’s and recommended by my Chiropractor to try Yoga to strengthen my core and support my weak back. Well, truth be told, I disliked my first class, but became a diligent yoga practitioner after another dozen classes and various teachers. Realizing that Yoga not only made me feel better on a physical level, doing things I wouldn’t imagine I could do on my mat, but on a spiritual and mental level too! On and off of the mat...it’s all YOGA!
At some point, I felt the need to share what I had learned throughout my health journey with our Community and began teaching at the YMCA part-time while working full-time in Sales. True story, I taught everything from Yoga to group fitness classes including, but not limited to Body Fit, Cycling, Fit For Life and Pilates at the Y. After another seven plus years, I decided to take a step forward to officially become a certified Yoga teacher. Teaching and helping others to become more proficient in their own practice became my passion.
March 2010 – I took my passion and the leap of faith, and we opened the doors of “Pedretti Power Yoga LLC” community. In the midst of the YOGA JOY that I was sharing 7 days a week at 805 George Street, I was diagnosed with Ulcerative Colitis. This diagnosis forced me to slow down and stop taking my own health for granted. I can’t thank our Community enough for their wonderful support from the day the Studio opened…until the day the Pandemic forced the closure of our beautiful space on March 17, 2020.
Combined with my Wellness Coaching certification, I have been inspired by my students (aka Yoga friends for life) to become a better teacher and a better person above all. My claim to fame is that I am the least flexible Yoga Teacher in Wisconsin! Proud of it. Yoga can be whatever you make of it and I’m not one to force any aspect of yoga upon anyone else. My amazing job is to simply offer students the tools to integrate yoga into their lives as they see fit. I have a Yoga mat and I want to travel, be around good energy, connect with like-minded people, learn new things, grow...
Allie’s Credentials: E-RYT200; Personal Trainer; Wellness Coach; Pilates and Group Fitness Instructor; Certified Yoga Sculpt and SUP Yoga Teacher. #yogandwellnesswithallie
Val Oestreich
Val has had a strong passion for health and fitness for the last two decades. She lives and loves all things fitness from cardio to yoga to resistance training.
She first fell in love with yoga in 2010. She had been running and teaching cardio and strength classes since 2006, but never did much yoga. She started with heated power yoga and just like that she was hooked.
She completed her 200 hour certification as a yogainstructor in 2014. She is also a certified group exercise instructor, certified personal trainer, certified nutrition coach, certified barre instructor, She is trained in kids yoga and an experienced distance runner.
Her mission statement is helping people get excited about their health and fitness journey & helping them complete their fitness goals.
She enjoys running, training for full and half marathons, and being outdoors.
She also enjoys spending time with her husband, Craig, together they enjoy traveling, hiking, biking and going to concerts. She loves being an aunt to her nieces and nephews. She also loves spending time reading, listening to podcasts, and expanding her knowledge on concepts of health and wellness.
Her strong philosophy is that everyone should practice yoga and barre at their level, and can use modifications to make every pose atainable and every workout tailored to their specific needs.
Jaime Schmitt
Jaime has been a Certified Group Fitness Instructor through AFAA for over 12 years. She started her fitness journey with the aerial arts teaching silks, hammock, pole fitness, and trapeze. Quickly realizing that she needed strength and flexibility to hang in the air, Jaime discovered Barre, Pilates and Yoga. She's since retired from the aerial arts but her love for Barre, Pilates and Yoga has only grown. Jaime is a certified Barre Instructor through American Barre Technique and she has an Aerial Yoga certification through Inner Sun & Flying Buddha Yoga. She also holds certifications through AFAA for Pilates and Yoga along with several aerial fitness certifications.
Outside of the studio, Jaime is a Social Worker by day and an author by night. She is a proud husky mama to her two rambunctious huskies, Mika and Kiki, who keep her on the go!
