Youth Fitness Coaches Professionals to Know 2025

Karl Mergille is an NASM Certified Personal Trainer and Nutrition Coach with 10+ years of experience coaching online. An NPC natural bodybuilding competitor and former athlete, he specializes in working with men and women over 30, former athletes getting back in shape, and busy professionals who want real results without crash diets. Karl has helped hundreds of clients transform their bodies through sustainable nutrition, smart programming, and consistent accountability. He is available for quotes on fitness, fat loss, nutrition, body recomposition, training for busy people, former athlete comeback stories, and overall health.

I am a fitness trainer who specializes in field of fitness and yoga more than 10years, and also help to motivate people for fitness. I writes with empathy and accuracy and has a knack for connecting with readers in an insightful and engaging way. I contributes regularly to FreakToFit.

My name is Archna Sharma, and I have been working in the fitness field for the last nine years. Fitness has always been a big part of my life, and I love helping people become healthier and more confident. In 2022, I started Fitness Fasto so I could share easy-to-follow workouts, simple nutrition tips, and practical fitness advice that anyone can use in their daily life. Today, I have a strong online community, including 90K+ followers on Instagram, active followers on Threads, and fitness content shared on Medium and Pinterest. My business is also listed on Google, and my website fitnessfasto.com is where I share my programs and fitness guidance. My goal is to make fitness simple, enjoyable, and possible for everyone—no matter their age or lifestyle.

Len is an award-winning, best-selling author and a motivational speaker in the fight against childhood obesity. He is recognized nationally for his innovative wellness events. Recently, you may have seen Len on such media giants as CNN, Good Morning America, CNBC, The Today Show, ESPN, Nickelodeon, MSNBC, The Fox Channel as well as the front page of The Wall Street Journal. Len has served as a consultant to the President's Council on Fitness, Sports and Nutrition as well as a spokesperson for the American Heart Association on the topic of childhood obesity. He has written articles for various media outlets including US News & World Report, Sports Illustrated for Kids, FOX News, MSN, AOL, PBS, Muscle & Fitness, USA Today, Working Mother, The National Wildlife Federation and Yahoo. Recently, Len worked with The New York Times Company as an expert in the field of children's health. a3.png Len has received praise for his leadership in the fight against childhood obesity from professional athletes, celebrities and Presidents of the United States. He has been invited to the White House on numerous occasions. He has also won multiple awards at the state and national levels for his efforts to keep children healthy and fit. Some of Len's books have reached the #1 spot under the category of exercise on Amazon's best seller list. Len's approach to children's health, fitness, and wellness is quite simple but extremely effective influencing millions of children worldwide to exercise. Len is best known for creating Project ACES, an event in which millions of school children worldwide exercise simultaneously in May each year.

As a NASM Certified Nutrition Coach (CNC) at Same Day Supplements, I specialize in providing science-backed, personalized nutrition guidance to help individuals achieve their health and fitness goals. With expertise in dietary planning, supplement strategies, and performance nutrition, I work to empower clients with practical tools for lasting results. My approach blends evidence-based knowledge with real-world application, ensuring sustainable habits that support both everyday wellness and peak athletic performance.

Athlete and fitness writer with 15+ years of structured training in track and field, Olympic weightlifting, powerlifting and general fitness. My focus is on the intersection of training, evidence-based nutrition, supplementation, and recovery. I founded VitalEdgeFit.com to bridge the gap between scientific research and practical fitness advice.

Coach Nate Daniels is an athlete development and youth sports expert, former professional athlete, and sports performance coach with more than 20 years of experience developing and mentoring athletes. A Collegiate All-American and two-time Hall of Fame inductee, Daniels brings firsthand playing and coaching experience to conversations about athlete development, sports performance, sports parenting, playing time, travel sports, specialization, mental toughness, athlete motivation and the changing landscape of competitive youth sports. As founder of Next Level Athletes and host of the Next Level Athletes Podcast, he provides straightforward, practical analysis of what young athletes actually need to develop and succeed at higher levels of competition.

Alycia Carrillo CSCS, MS is the founder of The Modern Athlete Method, a program designed to coach high effort, high powered women to obtain modern athlete bodies & minds using high level quantitative and qualitative data analysis with personalized support. With dual master’s degrees in Sports Medicine and Sport Psychology, she blends science-based training, practical application and real-life flexibility to deliver programs that are both effective and fun. A collegiate athlete herself, Alycia’s mission is to bring high-quality, performance-driven coaching to high-achieving women who want strength, confidence, and conditioning that fits seamlessly into their lives. Certifications: NSCA-CSCS (March 2016-present) Certification #: 7248040627 ALTIS Apprentice Coach Program (Feb 2020) ALTIS Need For Speed (Dec 2025) Disordered Eating Informed (Dec 2025) Precision Nutrition Level 1 (March 2020) Pain Free Performance Specialist (August 2021) Bioforce Certified Conditioning Coach (April 2023) Notable Accomplishments: USC Track & Field Team Member 2008-2010 Former Strength & Conditioning Coach at University of Kentucky with men & women’s dive (2 All-Americans), women’s tennis (Indoor National Doubles Champions) and women’s cheer (2018 & 2019 UCA National Champions, 3 USA National Team Members) Speaking & Publications: “2013 Triple Crown + HIC Pro Injury Report,” Surfer’s Medical Association, August 2015 “Integrating Sport & Exercise Psychology Principles in the Weight Room,” Midwest Sport and Exercise Psychology Conference, Feb 2019 “Integrating Sport & Exercise Psychology Principles in the Weight Room— Extended,” Kentucky Clinic, April 2019 “Exploring Career Paths in Strength & Conditioning,” University of Hawaii, July 2020

With over eight years of experience as a Women’s Fitness and Postpartum Recovery Specialist, I help women restore their health, strength, and confidence after pregnancy and childbirth. My expertise focuses on postpartum rehabilitation, including recovery of the pelvic floor, core and abdominal muscles, and safe rehabilitation following both vaginal birth and Cesarean section. I also specialize in improving posture, reducing body swelling and fluid retention, and helping women build a strong, functional body that supports long-term health and well-being. My approach combines evidence-based exercise, functional movement, and women’s health principles to address the unique physical changes women experience throughout different stages of life. Through personalized coaching and targeted training programs, I help women recover safely, regain core function, improve body composition, and feel stronger, healthier, and more confident in their everyday lives. As a Women’s Fitness Expert, I am available to provide expert commentary and insights on topics including women’s health, postpartum recovery, pelvic floor health, core rehabilitation, post-Cesarean recovery, posture correction, fitness, healthy lifestyle, body transformation, and sustainable wellness.

As the founder of Embrace Your Fitness, my dedication to creating tailored health and wellness programs spans over 15 years, with a focus on fostering fitness that is both enjoyable and sustainable. My work has empowered a broad spectrum of clients, ranging from corporations to sports teams, to embrace a healthier lifestyle through customized, innovative solutions. My recent publication, "Yes! Commit. Do. Live," encapsulates my approach to redefining aging and promoting brain health, integrating personal training with mindfulness meditation. This reflects my commitment to guiding clients on a transformative journey towards achieving their wellness aspirations and living their most authentic lives.

Movement professional with a trained eye for detail. Curious, getting a little better each day, and focused on delivering a specific, motivational, and educational training plan. A hard worker, natural leader, and true believer in the phrase "knowledge is power."

Domenic Angelino is FitCraft's Chief Exercise Scientist and a frequent expert source for major consumer media. His commentary has appeared in TIME, Newsweek, Forbes, GQ, Self, Women's Health, Men's Journal, TODAY, Parade, Runner's World, Yahoo Life, and 20+ other publications. He holds an MPH from Brown University and an MS in Kinesiology (4.0 GPA), with NSCA CSCS and ACE CPT certifications. His peer-reviewed research has been published as first author in the Journal of Strength and Conditioning Research and as co-author in Frontiers in Physiology and the Scandinavian Journal of Medicine & Science in Sports. He has also consulted with researchers at Johns Hopkins School of Medicine. Before launching FitCraft, Domenic was Lead Exercise Scientist and Head Coach at FitnessAI. He has scripted YouTube content for top fitness creators that has accumulated over 50 million views, written a fitness and nutrition textbook for a school system, and developed certification curriculum for Penn Foster. He specializes in the science of exercise adherence, strength training, behavior change, and AI fitness technology. He's a strong source for stories on why most people quit workout programs, what actually drives long-term consistency, how AI is changing personal training, and evidence-based answers to everyday fitness questions.

Hi, I'm [Foysal Mahmud], and I'm thrilled you've found your way to The Workout Haven. This space was born from a simple but powerful belief: fitness should be accessible, enjoyable, and sustainable for everyone, regardless of where you are in your journey. Whether you're taking your first steps toward a healthier lifestyle or you're a seasoned fitness enthusiast looking for fresh perspectives, you've come to the right place.

Amanda Brink Hull grew up just outside of Fenton, Iowa on a small acreage where she was raised with her three younger sisters. Their upbringing was rooted in hands-on experiences; working in their father’s two huge gardens, caring for the family’s chickens, and learning the art of deer hunting. These experiences instilled in Amanda a deep respect for nature, an understanding of the importance of nutritious food, and a strong work ethic; principles that serve as the foundation of her values today. Amanda and her husband, Josh, now live full-time in Florida but remain connected to their Iowa roots. They have two grown children—a daughter working in real estate in Iowa and a son who attends FGCU. Both enjoy cooking and leading active lifestyles. Amanda holds certifications in nutrition, personal training, health coaching, and as a transformation specialist from ISSA along with a Master’s degree in Industrial and Organizational Psychology. She has served on various boards from Iowa to Washington, DC, and has spoken at national conferences alongside Dr. Mehmet Oz. Because of her passion and dedication for overall health, Amanda was nominated to serve as a Hearst Wellness Champion from 2018 to 2021, in addition to her role as General Sales Manager at the Hearst CBS affiliate in Des Moines, IA. Currently, she volunteers as a wellness advocate, serving on the WellWorks! Committee at Strategic America. Amanda founded Hull Health in 2020, initially sharing wellness tips, workout ideas, and healthy recipes through social media. Since then, the mission has evolved to address the vital healthcare needs of individuals, organizations, and communities. Her latest book, Rooted: The Down-to-Earth Basics of Wellness, has received nothing but five-star reviews. Visit the Books page at Hull-Health.com to order your copy today. It can also be found on Amazon.

Richard Bennett is the founder of Calibre Performance Coaching, providing personal training, strength and conditioning, and boxing coaching in Redditch, UK. With over 15 years of coaching experience and a strong background in combat sports, Richard has worked with general population clients, amateur athletes, and professional fighters. Richard holds extensive qualifications including a Level 4 Certificate in Strength and Conditioning (CIMSPA), Level 3 Personal Training certification, England Boxing Level 1 Coach certification, and a 1st Dan Kickboxing Black Belt. He has competed in boxing, Muay Thai, and kickboxing competitions, giving him first hand understanding of training demands and performance optimisation. As a training educator, Richard mentors others in the industry while continuing to expand his expertise through his own ongoing education having studied a DipHE in Sport & Fitness at The Open University and currently enrolled on Bsc Strength, Conditioning and Sports Nutrition at University College Birmingham.

Certified nutritionist and fitness trainer and founder of Quarter to Fitness, a women-focused wellness brand promoting sustainable fitness and balanced nutrition for women 25+.

I have 10 years of professional experience across medical nutrition therapy, sports performance, and nutrition education and counseling. I’ve also served as a subject matter expert for a range of media outlets, with a focus on performance nutrition, weight management/GLP-1s, and dietary supplements. I'm always interested in expanding my professional network within the health, fitness, and performance industries and look forward to connecting!

I'm the founder and head coach of Siwicki Fitness, an online fitness platform delivering live virtual workout classes to women across the United States. Before launching Siwicki Fitness in 2020, I was a top 1% globally ranked group fitness instructor for Equinox, teaching at their flagship locations in DC, Bethesda, and Tyson's Corner. Siwicki Fitness was built around a simple idea. Women don't need another perfect program. They need one that fits around the life they already have. What sets us apart is the live virtual format. Instructors see members on camera, call them by name, and give real-time feedback. Members range from their 20s to their 70s and average 27 sessions in 8 weeks. I also run The Bridal Bootcamp, a wedding fitness program helping brides prepare for their big day with confidence and strength rather than crash dieting. Personal note: I was diagnosed with Type 1 Diabetes at age 5 and have managed my health through fitness ever since, including playing football at Dartmouth College. I'm available to comment on managing chronic conditions through exercise, virtual fitness, women's fitness across life stages, wedding fitness prep, and the realities of online coaching versus in-person training.

Christine Beavers, DPT - Pediatric Physical Therapy Expert Dr. Christine Beavers is a licensed physical therapist and founder of Growing Gains Therapy, a boutique pediatric practice serving Manhattan and Brooklyn families. With extensive experience in NYC's top private special education schools, she offers expert insight into child development, sports readiness, and family wellness. Expert Commentary Available On: Preschool and kindergarten readiness assessments Building children's strength, endurance, coordination, and balance Youth sports participation and specialization concerns Strength and conditioning for young athletes Fundamental movement skills that enhance future sports performance Gross motor milestones and developmental red flags When parents should seek therapeutic support for their child Child safety and injury prevention Promoting health and wellness in urban children Age-appropriate physical activities for NYC kids Dr. Beavers' practice serves both private-pay families and children receiving DOE-funded services, giving her comprehensive insight into child development across diverse NYC communities. She helps parents navigate everything from crawling to collegiate athletics while ensuring children build the physical confidence needed to thrive in the city. Background: Doctor of Physical Therapy degree, extensive experience in NYC private special education settings, founder of Growing Gains Therapy offering occupational, physical, and speech therapy services.

I've in the fitness industry for over 15 years now with that past 6 working as a full time writer. This includes creating educational content that's applicable to general populations as well as breaking down research and more complex topics. My accolades include; - Masters in Exercise Science - NSCA CSCS - ISSN CISSN - ACSM EIM (Exercise Is Medicine) - NSCA Speaker - Published in NSCA COACH In addition, I live a fairly active lifestyle, being engaged in an array of sports throughout my lifetime; - Strongman - Running - Triathlons - Padding sports This gives me academic education, vast experience in creating content , and applicable experience in the real world. Collectively, this allows me to know what research says but also what's important to the reader in the real world.