Meet Our Personal Trainers

Steve Basdavanos

Steve holds degrees from the University of Pennsylvania and University of Maryland.  He is certified as a personal trainer by the National Strength and Conditioning Association (NSCA), with over 15 years of experience.  His previous personal experiences include Olympic lifting and power lifting.  He won a silver medal in the masters division of the Maryland State Powerlifting Championship (held by the Maryland State Powerlifting Association, the state chapter of the USAPL) in November 2014 and holds four Maryland State records. Today, Steve trains clients for overall fitness, including core strengthening and stability progressions with basic resistance training exercises.  He has worked with clients with a wide variety of health issues including rotator cuff problems, knee and hip replacement. In 2010, 2012 and 2015 Steve received honors from Bethesda Magazine for being one of the area’s top trainers.


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Devin Knox

Devin has a Bachelors of Science in Kinesiology from the University of Maryland. He is an American Council of Exercise (ACE) certified Personal Trainer, NSCA-certified Strength and Conditioning Specialist and Basic Olympic Lifting Certified (BOLC). Devin is active in the USA Powerlifting/Maryland Powerlifting Federation where he has won multiple gold medals in two different weight classes, as well as a best overall lifter award in the 2013 Maryland State Championships.  Devin’s philosophy towards fitness is that everyone should work towards a goal of strength and power through a full range of motion in order to make anything, from activities of daily living to sports performance, easier.

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Marian Lally

Marian Lally, the Group Exercise Director at Rock Creek Sports Club, has more than 20 years of experience in the industry. She is certified in Pilates Mat and Reformer by Balanced Body, group exercise through the American Council of Exercise (ACE), and personal training through ACE. A former dancer, Marian traded in her dance shoes for a pair of sneakers in 1992 and became a group exercise instructor, and eventually a certified personal trainer in 2000. The latest part of her fitness journey includes becoming certified to teach Pilates Mat and the Reformer through Balanced Body. Pilates is a natural extension of Marian’s philosophy of “functional fitness,” as it elongates and strengthens, improving muscle elasticity and joint mobility— invaluable for injury recovery, sports performance, good posture and optimal health. “Teaching clients how they can be active for a lifetime, even through injuries, aches and pains, illness, or life’s set backs is a rewarding part of my client relationship.”

Marian also has a confession. She is a former sugar and bread junkie! “Making changes to a diet that reduces inflammation and cures disease has increased my quality of life. If I can refrain from processed foods and sugar, and get about 15% of my diet from animal products, anybody can.”

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Angela Sims

Angela is certified as a personal trainer and group exercise instructor through AFAA.  She has been in the fitness industry for almost 20 years. Angela has successfully trained clients for fitness competitions, class reunions, weddings as well as everyday life.  She specializes in incorporating Interval Training, Boxing, Pilates and/or Yoga into her training sessions to enhance client results, designing workouts that are efficient and effective. Her fitness DVD “Tighten Up” was released in 2005 and encompasses her training techniques.  Angela holds a BS in Communications Studies from Northwestern University in Evanston, Il.  She received her JD from Washington University School of Law in her hometown, St. Louis, MO.

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Sharon Sellers

Sharon is the Fitness and Operations Manager at Rock Creek Sports Club.  She is certified as a personal trainer by National Strength Conditioning Association (NSCA) and has over 20 years of fitness experience. Previous athletic experience includes track, softball and competitive bodybuilding. Sharon’s philosophy is live life in the balance. She has a BS in Computer Science from Florida State University and is mom to 4 children.

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Zach Tolchin

Zach is certified as a personal trainer through the National Personal Training Institute (NPTI) where he studied strength training and kinesiology.  He also holds the Basic Olympic Lifting Certification (BOLC).  Zach attended Yeshiva University in New York and The Genesis Institute in Jerusalem, Israel and has spent time traveling in Europe.

Zach is active in the Powerlifting world, competing himself as well as coaching Maryland state record holding powerlifters. His philosophy on exercise is “One step at a time leads to big results.”

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Jean Simons

Jean is certified as a personal trainer by the American Council on Exercise (ACE) and a Corrective Exercise Specialist with National Association of Sports Medicine (NASM).  Jean has had a lifelong interest in fitness and nutrition, and recently began competing in triathlons and 5ks.  Jean works with clients to translate short and long-term goals into fun, safe and personalized training sessions. She provides clear exercise schedules, email reminders and guidance on nutrition.  Jean trains both exercise novices and experienced athletes, and helps clients suffering from joint, weight and flexibility issues.  When she’s not at Rock Creek Sports Club, she volunteers at N Street Village, where she leads a fitness class for homeless women.  Jean has A BA from the University of Chicago, a JD from NYU School of Law, and is a mom to three daughters.

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Tina WarnickTina.Warnick

Tina is a certified personal trainer from the World Instructor Training School and a certified running coach from the Road Runners Club of America. She also holds a BA in Anthropology from Haverford College and a MS in Education from University of Pennsylvania. Whether you’re a beginner and looking to discover the joys of physical fitness, or training for triathlon, Tina is your woman.  She believes that “once you incorporate fitness as part of your lifestyle, you’ll wonder how you lived any other way!”  Originally from Tia Juana, Venezuela, Tina has lived all over, and during her spare time she enjoys swimming, cycling, running (triathlons!), reading, and traveling with family.

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Isiejah Allen

Isiejah is certified by the National Academy of Sports Medicine (NASM). A native of Silver Spring, MD, Isiejah attended Gonzaga College High School in NW DC, then Fordham University in NY, where he obtained a B.A. in Business Administration and Communications. Isiejah is also a professional athlete, having competed in football and rugby.

Using many different modalities of training, Isiejah works with clients of all ages and fitness levels. Isiejah helps his clients with weight loss, strength, sport-specific training, balance, and coordination. Isiejah also understands that a safe workout environment is conducive to achieving maximum results.

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Akosua Asoto
Akosua Asoto

Akosua Akoto is a dancer, dance instructor, scholar, and mentor. Her unique approach to fitness is grounded in the creative application of rhythm and choreography to basic principles in biomechanics and physiology. She has experience in athletic, physical therapy and performing arts settings. Among her credentials, she holds:

  • BS Sports Medicine- Howard University
  • MS Human Performance, Rehabilitation and Injury Prevention – California University of Pennsylvania
  • Personal trainer certification- American Council of Exercise (ACE)
  • Performance Enhancement Specialist certification- National Academy of Sports Medicine (NASM)
  • Speed Specialist Certification -National Academy of Speed and Explosion (NASE)

A snippet of her training advice to you: “Longevity should always be the ultimate goal. We must therefore view fitness in the same light we view life. Breathe through your reps, take everything in sets, keep your core strong, maintain your form and posture, push a little harder than the workout before, consistency yields results, balance work and rest, listen to your body, compare yourself only to the person you were yesterday. No matter what the world tells you, there is no general workout. Tailor your program, your goals, and your life for you and you alone. Let’s make fitness and health a lifestyle, not a fad. Train with me today, for the You of tomorrow!”

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Julie Vogel
Martie Bollo

Julie is certified as a personal trainer through the National Association of Sports Medicine (NASM) as well as a certified TRX suspension training instructor. Julie’s original career was a construction project manager with a BS in construction management/structural engineering from the University of Washington. While she has always been active, Julie grew to love lifting in college and eventually moved from the construction business to the fitness industry. Just like a building needs a strong base, Julie focuses on improving her clients’ foundation and movement patterns during strength training to benefit them in their everyday activities.

Healthy living and eating is a priority at home. However, her husband and three children will tell you that Julie’s favorite saying is “everything in moderation, including moderation.” For her own workouts, Julie enjoys lifting, bodyweight workouts and cycling.

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Gorica Markovic
Gorica Marcovic

Gorica (pronounced Go-rit-za) was born and raised in Gorasde, Bosnia and Herzagovina. She earned a AA in Physical Education from the University of Belgrade, Serbia and an AA in Business Administration from Strayer University, Washington, DC. Gorica has lived in the DC area since 1997 and feels this is home. Her personal training certification is with NASM and her specialties include motivational coaching, increasing stabilization, flexibility and strength, Powerlifting, Yoga and partner training.

Gorica’s philosophy on exercise is “Mental focus is the key. IT opens the window to limitless health, strength and energy. When you experience the power that comes with it–you become integrated and the movements are natural.”

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Caity Adams
Stephen Burnett

Caity hails from Easton, Maryland. She’s a Certified Personal Trainer, Phase II Master Trainer, and Life Wellness Coach through AAAI/ISMA.

Caity loves working with people who want to achieve weight loss, those who want to build muscle, and those who are recovering from injuries.

In her spare time you can find Caity enjoying a good run, weight lifting, kayaking and reading.

Caity’s exercise philosophy: “Believe in yourself. If you can change your mind, you can change your life.”

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Avi Weitzman
Avi Weitzman

Avi is a personal trainer certified by the National Academy of Sports Medicine (NASM). Avi developed an interest in weightlifting during his teenage years while volunteering as an EMT for the Rockville Volunteer Fire Department. Over the years he has trained under a number of competitive bodybuilders, gaining extensive knowledge in advanced bodybuilding techniques.

Avi also has a background in Tae Kwon Do, competing in multiple tournaments and earning a Black Belt from the World Martial Arts Association.

Whether training for weight loss, core stability, or strength and physique enhancement, Avi uses his martial arts experience to help clients focus on the connection between body and mind. Avi is a graduate of the University of Scranton.

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Chris Kunde
Chris Kunde

A native of Sterling, Illinois, Chris currently holds an ACE-CPT certification and an ACE Sports Conditioning Specialization. Chris served in the United States Army with a tour to Afghanistan, where he earned the Army Fitness Badge, among other decorations, which emphasizes the importance of fitness to Chris.

Chris has always been active in sports and fitness, including wrestling, baseball, and captaining his high school soccer team. He also was a high school soccer coach in Illinois, specializing in goalkeeping. In addition to powerlifting, Chris actively plays recreational soccer and ice hockey for the USA Warriors Ice Hockey team. His training specialties are sports conditioning and functional fitness.

Chris’s fitness philosophy is based on an old phrase, “Rome wasn’t built in a day.” He ensures his clients take their time in improving their fitness in a safe manner, noting that injury prevention is a top priority and that proper form and progression are the keys to being injury free.

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