
Meet the Team
Our team is dedicated to guiding you through an exhilarating week of adventure, wellness, and personal growth!

owner and integrative health coach
Dr. Holly Peng
I believe the foundation of "being the best version of you" and "living life to its fullest" is having HEALTH. And health is not the absence of disease but an optimal state of mental, physical and spiritual well being. I believe that everybody in this world can tap into that deserved authentic health and there is nothing more important.
Growing up with my grandmother (who lived until she was 105) I would hear her mantra in my ears -"watch over your health- without it, nothing else matters". All the money in the world would be useless without your health. Without your health, you cannot be en effective parent, worker, or leader.
I believe furthermore that we were put on this earth to experience an exuberant life and the power to attain it is inside each one of us.
Here at Island Trek Fitness, we are dedicated to helping you achieve this exuberant life."
Dr. Peng is the founder, owner, and manager of Island Trek. With a 22-year career in clinical medicine, she has worked for several institutions such as Group Health and Kaiser Permanente. As a self-employed contract/llocums physician, she brings a wealth of experience and expertise to the fitness retreat. Hailing from Tucson, Arizona, Holly pursued her undergraduate degree at the University of Chicago and obtained her medical degree from the University of Arizona School of Medicine. She completed her residency in family medicine at the University of Washington and Group Health, becoming board certified in the field. Additionally, Dr. Peng holds a diploma in tropical medicine and disease from the London School of Tropical Medicine and Hygiene. Beyond her allopathic training, she is also an integrative health coach, having graduated from the Institute of Integrative Nutrition. Currently residing in Seattle, WA, Holly takes great pride in being a loving mother to her 14 yr old labradoodle, Barkley.

yoga instructor, hiking guide
Marcie Costello
"I teach from my heart and I am so grateful for all the students who come and share their beautiful souls- they inspire me more than they could ever know."
Marcie Costello is the founder of Shakti Yoga and Wellness. She is passionate about the many healing benefits that yoga offers and is appreciative everyday for the privilege to share such a beautiful practice with others. She believes that through the practice of yoga, there is no limit to how much one can grow physically, emotionally and spiritually.
Marcie has been practicing yoga for over 20 years. She is RYT 500-hr Yoga Alliance Certified. Her formal training was through Yandara Yoga Institute , Teacher Trainer and Course Development at 200 and 300 hour level programs.
Marcie graduated from the Utah College of Massage Therapy in 1998 and has completed nearly 1500 certified hours in various modalities of massage. She is also a Reiki level Master/Teacher with study interests in Pranayama, Meditation, Ayurveda, Sanskrit, Mantra, and Ritual Ceremony.
Whether on the mat or on the massage table, she inspires her clients to calm the nervous system while honoring their boundaries of the mind, body, and spirit. She offers subtle adjustments with an emphasis on safety.

yoga instructor, hiking guide
Alaina Burck
"I believe everyone should be able to access yoga and fitness no matter their ethnicity, gender, orientation, religion, or body type. I am creating a baseline of mindfulness in everything that the people I teach and work with do. People should feel strong in their beautiful bodies and that the work first starts inside the mind, not what the number is on the scale".
Alaina was raised near Seattle, Washington where she grew to love the outdoors and her community from a young age. After graduating with her Associates degree in high school, she transferred to BYU-Idaho and received her Bachelor's degree in Exercise Physiology.
After she graduated, she received an invitation to serve in the Peace Corps. She served in the country of Albania for two years as a Community Health Education volunteer working in schools and teaching yoga.
She then traveled to India where she received her 200 hour teacher training in ashtanga vinyasa and hatha yoga. Since, she has been a hiking guide for troubled teens and at a fitness retreat in Salt Lake City, Utah.
She strives to inspire that any BODY can access yoga and other forms of exercise. Mindfulness is integrated into all of her classes including her special love of meditation, restorative yoga, and yoga nidra.
In her free time, you can find Alaina doing yoga, crossfit, making killer playlists for her classes, cooking and hanging out with friends. Oh, and laughing most days.

chef
Andreas Zellweger
"I love to cook with local ingredients and I do my best to honor the many great food traditions and cultures around the world with my eclectic style. I have a deep appreciation for the summer bounty of the Skagit Valley and I am super excited to be cooking for this group in one of the best food producing regions in the country at peak season. I can't wait to have you join me for dinner in what I think is the most beautiful place in Washington!"
Andreas, a Pacific Northwest native, has dedicated the past 13 years of his culinary journey to Seattle, Anacortes, and currently Kitsap County. In 2013, he pursued his passion for the culinary arts at the esteemed Seattle Central Culinary Academy. Since then, Andreas has actively sought inspiration by collaborating with renowned chefs, constantly enriching his repertoire.
His culinary style is a delightful fusion, drawing influence from his immersive experiences at local gems like Atown Bistro, the enticing Hawaiian-inspired fried chicken haven of Maono Fried Chicken and Whiskey, and the worldly delights of Tallulahs, among others. These distinctive culinary environments have shaped Andreas' unique approach to food, resulting in a harmonious blend of flavors and techniques.
During his leisure hours, you'll often find Andreas tending to his thriving vegetable garden, where his bountiful produce is always shared generously with others.