About Me

My name is Usmaro but I go by Felix. I am a NASM certified personal trainer and corrective exercise specialist (CES) and I love helping people reach their fitness goals. I first got into fitness when I was a young boy but I became inspired to become a personal trainer after returning home from my MOS school over 4 years ago. I have worked with a variety of clients from the elderly to those suffering from knee and ankle pain and everything in between. Working with me is an enjoyable experience, so much so that you can't wait to come back!

What to Expect

After conducting a proper warm-up we would go through a series of exercises that are of your capacity and oriented towards your goals. I will be there the whole time, teaching how to perform proper technique and form and asking you questions well so I can help you with any problems you maybe experiencing during the exercise.

Client Success Story

"Felix Thank you for helping me continue to reach my health goals. You are the kindest person I have met in a long time. All good wishes."

" I owe you alot Felix, I've notice a lot of changes, you really know what you are doing"


  • Cardio
  • Endurance Training
  • High Intensity
  • Personal Training
  • Rehab Training
  • Resistance
  • Running
  • Strength And Conditioning
  • Suspension Training
  • TRX

I Can Help You Accomplish

  • Weight Loss
  • Weight Gain
  • Firming And Toning
  • Flexibility
  • Increase Muscle Strength
  • Aerobic Fitness
  • Endurance Training
  • Body Building
  • Nutrition
  • Pre/Post Natal

Training Locations = Travel Radius = Preferred Training Location

= Travel Radius = Preferred Court
  • Willing To Travel To Client
  • 15 Miles Radius
  • San Diego, CA 92115
  • Theory Fitness
  • 1587 Golden Gate Ave
  • Chula Vista, CA 91913

  I can travel within 20 miles of zip code 91913

General Availability

Sunday Inquire about availability
Monday 6am - 10am and 6pm - 8pm
Tuesday 6am - 8am and 6pm - 8pm
Wednesday 6am - 9am and 7pm - 8pm
Thursday 6am - 8am and 5pm - 8pm
Friday 6am - 9am and 12pm - 1pm
Saturday 6am - 8am and 2pm - 5pm

Usmaro's Pictures & Videos

Your first session is backed by our Good Fit Guarantee

Client Feedback

Vanessa L.

I highly recommend Felix with Theory mobile training. He will challenge you but in a safe manner. I am very happy with my results. I absolutely had no visible muscle to visible muscle and superior improved strength. I recently ran my first 1/2 marathon and had an amazing finish time and my cardio and strength were still strong at the end. Theory mobile training will get you results!

January 18, 2018 • Verified
$57 /hour

No upfront payment, pay-as-you-train

No Risk - Cancel or switch trainers anytime

Didn’t enjoy the 1st session? We’ll refund it