New Customer Special! Use Code SPRING and Save $20 Off Your First Purchase

Nephtwim Rosario lightening bolt

Verified 3 Reviews
location-iconOutdoor & In-Home
vaccinated COVID-19 Vaccinated

About Nephtwim

Hi, welcome to my page. I have a passion for helping people move better. My own experience led me to pursue fitness education in order to address issues with joint pain and injuries. I want you to take what my life and training experiences taught me for your benefit in making you a stronger and healthier person. My approach to training is targeted and personal.

My favorite client story

I have a senior female client who struggled with losing weight for most of her adult life. She tried many diet and exercise strategies yet could not achieve her desired weight loss goal. Needless to say, she was frustrated and desperate when she came to me. Not only did she achieve her weight loss goal, she improved several health markers.

My favorite exercise

Walking. It is the most fundamental human movement and counters the negative effects of a sedentary lifestyle.

My favorite quote

Count any and every opportunity to move that exists in the space of our lives as valid movement worth doing. - Michelle Segar

My training philosophy

My training philosophy is simple: Do what you can while gradually progressing. I meet you where are and help you get where you want.

My training experience

Twenty two years of physical training in the military and certification as a personal trainer since 2019.

Areas of Expertise

  • Strength Training
  • Cardiovascular Conditioning
  • Corrective Exercise
  • Core and Balance
  • Flexibility and Mobility
  • Posture
  • Functional Training
  • Myofascial Release
  • Injury Prevention

NCCA Accredited Certifications

NASM Certified Personal Trainer

Additional Certifications

DotFit Certified Nutrition Specialist, NASM Corrective Exercise Speciaist


BS in Technical Management

Who I Especially Like Working With

Beginners, Middle-aged, Post-rehab, Rehab, Seniors

Medical Conditions Experience

Ankle Injury, Arthritis, Back Pain/Issues, Bad Posture, Chronic Pain, Hip Pain/Issues, Joint Pain, Limited Mobility, Lower Body Pain/Issues, Plantar fasciitis, Postural Issues, Sleep Apnea, Stress

Additional Languages Spoken


Training Areas Served

In-home or Outdoor Training

I am a 68 year old grandmother and for almost 20 years I have being trying to lose weight with pills and bunch of diet offers and it was very frustrating. I did everything on the book even went to the doctor and asked him why I can not lose weight. He did a bunch of tests on me including thyroid and found nothing. Believe me when I tell you I tryed. I did excersise and walk 2 miles a day. I am blessed I found Mr. Rosario who understood right away what my problem was and asked for help. Nephtwim designed a program specially for me and my age and after 8 months with him following his plan an advise I went from 184 pounds to now 134 from size 16 to size 6 and I feel healthy and energetic. TY Mr. Nephtwim Rosario. I recomen him 100%.

Iris Luna Camacho

Great trainer. Exactly what I was looking for.

Justin A.

Life Changer I am a 72 years old grandfather struggling with out of control overweight problems. My main issue was I did not have a plan and was eating anything and everything like it was not tomorrow. I was weighing 227 lbs at 5'7' tall, I knew my normal weight should be around 185lbs but did not know how to get there. And then I found Nephtwim on fit. I was impress with his resume did called him and asked him to help me. Nephtwim designed a low calories deficiency plan for me along with specific exercise tailor for my age. I have being with Nephtwim for 3 months now and lost 27 pounds and went from a 44 waist size to 38 and the best is yet to come cause I am not done yet. He keeps me motivated and gives me sound advice. Nephtwim is TRUE professional trainer.


Are you a trainer?
Get new clients. Change lives.