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ACE certified personal trainer

Mary Arciero lightening bolt

Verified 10 Reviews
location-iconOutdoor & In-Home location-iconVirtual

About Mary

My goal is to help people feel happier, healthier, and more confident. I am an experienced Certified Personal Trainer with a holistic background (please see my Additional Certifications).  I help clients work on mobility, strengthening, flexibility, pain management, nutrition, healthy habits, and weight management.  Most of my clients are women between the ages of 40 and 85 with underlying health conditions, joint issues, and a range of body types.

As your trainer, my goal is to help you develop healthy habits and independence to reach all of your fitness and nutrition goals. My workouts are completely customized to your specific goals, interests, and current fitness levels. I provide fitness and nutrition homework in between sessions to maximize your results. There is no additional cost for this homework or texting/email check-ins. 

My training style is very positive, empathetic, supportive, motivational, and educational. My clients mean the world to me, and I work tirelessly to help you achieve your goals. Together we can help you achieve all of your fitness goals. I look forward to meeting and working with you!


My favorite client story

One of my clients has struggled with weight loss and a sedentary lifestyle for years. As a cancer survivor with a knee replacement, she wanted to make exercise and a healthy diet part of her daily life. Since working with me, she has maintained a weight loss of 40+ lbs, has made exercise part of her daily life, and has found a new confidence in herself, her capabilities, and her strength. A side benefit for her has been seeing daily activities get easier and easier. Seeing how happy she is has been so gratifying.

My favorite exercise

Push-ups - everyone can do some variation. Even my 86 year-old client can do them against the wall!

My favorite quote

"A candle loses nothing by lighting another candle."

My training philosophy

My training philosophy is to set a well-developed plan and adhere to it through hard work and dedication, pivoting as necessary to achieve your goals. I will do my very best to ensure a safe and effective workout program for you.

My training experience

As a student at the University of Maryland, I trained many clients of both genders and all ages from 18 to 74 with a wide range of goals, health issues, and preferences. After taking a break, I am now doing in-home and virtual personal training with an emphasis on partner training, women's health, weight loss, mobility, pain management, flexibility, balance, and strength building. I work with all types of health conditions including high blood pressure, low back pain, post-surgery, joint problems, cerebral palsy, scoliosis, sciatica, shoulder and neck pain, asthma, diabetes, and cancer remission (just to name a few).

Areas of Expertise

  • Core and Balance
  • Strength Training
  • Weight Loss
  • Muscular Definition
  • Muscle Gain
  • Posture
  • Functional Training
  • Stress Reduction
  • Wellness
  • Yoga
  • Cardiovascular Conditioning
  • Nutrition
  • Flexibility and Mobility
  • Myofascial Release
  • Injury Prevention
  • Corrective Exercise

NCCA Accredited Certifications

ace certification ACE Certified Personal Trainer

Additional Certifications

ACE Certified Weight Management Specialist , ACE Senior Fitness Specialist

Who I Especially Like Working With

Beginners, Brides-to-be, Disabled, Middle-aged, Overweight/ Obese, Peri/Post-menopausal, Post-rehab, Pre/post-natal, Rehab, Seniors, Women

Medical Conditions Experience

Ankle Injury, Anxiety, Arthritis, Artificial Knees, Asthma, Autoimmune Diseases, Back Pain/Issues, Bad Posture, Bone/Joint Injury, Breast Cancer, Cerebral Palsy, Chronic Pain, Cognitive Delays, Depression, Diabetes, Diastasis Recti, Hamstring Issues, Headaches/Migraines, High Blood Pressure, High Cholesterol, Hip Pain/Issues, Hypertension, Hypothyroidism, Joint Pain, Joint Replacement, Knee Pain/Issues, Limited Mobility, Lower Body Pain/Issues, Menopause, Neck Pain, Obesity, Parkinson's Disease, Piriformis Syndrome, Plantar fasciitis, Postural Issues, Prediabetes, Pregnancy, Rheumatoid Arthritis, Rotator Cuff Issues, Sciatica, Scoliosis, Shoulder Issues, Stress, TMJ

Mary was a very motivating and energetic personal trainer. She always had fun workouts planned for me around campus that utilized the nature of the landscape. From running up and down the stairs of Comcast Center to running backwards uphill to lifting weights at the gym, it was never a dull session. I always left feeling refreshed, sweaty and sore for days. I lost 10 lbs in the time I worked out with her and felt more energized. Mary is very effective and drives results in a fun way. I strongly recommend her as a personal trainer.


Mary is very caring and attentive to what each client needs, what their limits are, and how far she can push them. She encourages and motivates me to do better, and yet she knows how much I am capable of. She’s always on time and ready to have a fun workout!


Mary was my first personal trainer (back in my college days) and she definitely gave me a push start to my workout regimens. Sometimes, I would feel my legs pulsing after her intense workouts. She always knew how to encourage me to try harder or go longer to really get a good workout. She is also a very sweet person and a pleasure to work with.


Mary is kind, supportive, knowledgeable and so much more. She gets to know you and your goals and makes them happen. She holds you accountable but also understands that you have a life and is able to help you find a balance so you can stick to the program. Her workouts are challenging but not intimidating. She actually makes working out fun (a sentence I never thought I would say). What I find most impressive is her knowledge of the human body and different work out methods. She is constantly keeping up to date with the latest research and imparting that knowledge to her clients so you are working out smarter not harder. My sister and I are looking forward to many more sessions with Mary.

Becky D.

Mary is an amazing personal trainer! If you're looking for someone to motivate you on your fitness journey, provide knowledgable guidance, and keep you accountable, look no further! Mary was a perfect fit from the very beginning. Highlight: My favorite part of working with Mary is her extensive knowledge of the human body and fitness and her ability to teach me. I love learning the "why" behind the exercises, number of reps, when I increase weight, and when we mix up the homework. It's clear that Mary has a plan and logic behind everything we're doing, which means I've gotten to see results much faster. Consultation: On our consultation call I was able to explain my goals and learn more about her training style, which is highly personalized and focused on sustainable, continuous improvement. At the start of our first session, Mary took extra time to understand my motivations and what success looked like to me. Sessions: The sessions are challenging, but Mary is always very attentive to check in with how I'm feeling and if I have any pain from previous injuries. For me they were a mix of cardio and weight training, but could vary depending on your goal. Mary was also willing to work with me on designing a program that I would enjoy and do consistently. She brings a lot of energy to the sessions and helps motivate me to do "just two more" reps. Results: In the first few weeks, I saw improvement in my muscle strength, cardiovascular endurance, and overall wellness. My goal of just wanting to be fit and "live to 100" wasn't an easy one to define, but Mary was able to craft a workout plan that fit the bill. I was so happy after my initial session package, that I added more.

Elaina G.

I have had many Personal Trainers over the years, but Mary stands out as one of the best. She is very energetic, organized, and passionate about Personal Training.

Eleon F.

Mary is a great trainer. She is positive, encouraging and never makes you feel bad if you are struggling. She adapts to your needs and really listens to your goals. She tailors the work to any physical limitations, gives you great ideas on alternative exercises, and follows through. Extremely responsive and communicative. My experience with Mary has been great.

Gabrielle N.

Excellent trainer, would use again. She is detailed, kind and supportive, very encouraging.

Maryrose E.

Mary is excellent, I highly recommend her.

Maryrose E.

Mary is an amazing personal trainer who shows a clear passion for fitness and makes exercising fun. She created a fitness plan for 4 participants for a fitness study and was able to create a workout that would be challenging, but fun and never got boring. All of the participants showed an improvement, thanks to Mary’s workout plans. She was extremely supportive, knowledgable and easy to work with. I would highly recommend Mary as a personal fitness trainer for anyone who is looking to begin a workout routine or improve on their current workout routine!

Lauren N.

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