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Expert Personal
Training Sienna, TX & Online!

Personal Trainer 

Sienna, TX

Private workouts at my studio in Sienna. Since 1997 personal training has been my full-time career and passion.  My clients live the lives that they want.  Healthy, Happy, Fit & Strong!   Bring me your goals and I'll bring the most effective path to reaching them to you.    


About Fitness By Day

Brian Day, BS, CSCS


  • Bachelors Degree Exercise Physiology, UMASS Lowell, 1997

  • NSCA Certifiied Strength and Conditioning Specialist

  • NSCA Certified Personal Trainer

  • 25+ Years Full-Time Personal Health and Fitness Trainer

  • Fitness By Day was established in 1999


  • Strength and Conditioning

  • Weight Management 

  • Correcting Injuries and Muscular Imbalances 

  • Post Physical Therapy Conditioning

  • Functional Training

  • Injury Prevention and Healthy Joint Mobility

  • Optimizing Health and Performance through Nutrition

  • Improving Function Against Chronic Disease (Parkinson, Cancer, etc)


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Client Testimonials

Brian Day has taken me from someone who ached after simply walking around the block to someone who is ready for competition.  Brian's approach can easily be summed up in one word:  customized.  He sees what the client needs and can change a workout on the fly to accommodate an individual's strengths and weaknesses.  Brian's personal training skills and knowledge are clearly apparent, and his personality makes the workout engaging and fun.  If you are looking to jumpstart your fitness routine or take yourself to the next level, Brian is the guy!

Bobby Eberle

Sienna, TX

Bobby Eberle, Sienna, TX

“Brian is very professional and succeeds in getting the desired results. He works within your personal timetable and builds you a custom program to achieve results for any level of performance. His ability to extend personal limits is amazing. I would recommend his services to anyone looking to attain short or long term results.”

Ron Cambell, US Army Explosives Technician (EOD)

“Brian is not only a terrific motivator, he is EXTREMELY knowledgeable and professional in his approach to my personal training program. Brian is always available to answer my questions and to try new methods to help me achieve my goals. What’s really great about training with Brian, though, is his ability to push me to my limits, especially by introducing much needed variety into my fitness plan. I’m never bored and the best part is this: It’s working! I’m looking and feeling great! ”

Teresa Deskins, Santa Monica, CA

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