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Body by O'Brien

Katie O'Brien is an experienced and ISSA and certified personal fitness trainer and certified OFNC (online fitness and nutrition coach) in the Rhode Island Area, specializing in weight loss, strength training, and achieving overall better wellness.

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At a Glance

Active Clients
Years Experience
of different plans

About Katie


Wide range of expertise

ISAA certified, specializing in weightlifting, bodybuilding, nutrition, and weight loss.

Attention to detail

1:1 training sessions with Katie where she is focused and working with you during your entire time!

Emphasis on YOU and YOUR goals

Custom plan built based on your needs and goals.

Top of the line equipment

Located at All Day Physique gym in Pawtucket.

Flexibility on timing

Work around YOUR schedule, not the schedule of a trainer or gym hours.

See real results

See what clients are saying below!

See real results!

"If I'm being honest, I've always been anxious and self conscious when going to any gym. Since joining the All Day Physique gym, I've never experienced a more welcoming and energetic gym.


I feel especially lucky getting to work with Katie! She is always flexible with my schedule and beyond accommodating, making sure we fit in every session for the week. I don't think I have walked in once without her smiling and excited for the session! She pushes me to the next level, leaving me impressed with what l
accomplished during the session.


The days I feel the best are the days I start at the gym. I had only planned on signing up for a couple months just to get over my gym anxiety but Katie has been more than amazing and I don't plan on stopping!"

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Hear what clients are saying!

"Although I haven't had Katie as my trainer since the beginning of my fitness journey, I could not be happier to have her now.

She is so understanding, loving and all around amazing person. Katie is an inspiration to me. She makes me want to do better!

I consider Katie as a friend and I'm so thankful to have her in my life as a trainer/friend. I would not want to be with anyone else"

Anxious or nervous about the gym?

Book a no pressure consultation with Katie to begin building the foundation to your fitness journey and achieving a healthier lifestyle!