david trainer headshots with teal
David Marthone
Personal Trainer

David’s Story

My name is David everyone calls me LEFTY (you can as well lol) and I’m a new fitness trainer at G-Fit…I’m originally from Boston, Massachusetts and I grew up in a town called Mattapan. Growing up my big brother Mario was a huge influence. He ran an after-school Peer Leading Program where I was an employed HIV/ AIDS Peer Leader. Pretty cool job I got paid to study and play basketball! Also we studied Sociology as this was his Major at Boston College. Discussed current events and ran “Mock Trials” where we had the opportunity to learn a few things about what goes into criminal trails and elements of criminal law. I played basketball all throughout my youth in after school programs and at school so pretty much 24/7. Been an athlete all my life!


I’ve been a Personal Trainer for quite some time now. While here living in New Orleans I was a Fitness Director at YouFit for some time where I picked up some skills in fitness management as well as sales skills. I’ve also worked at Premier Fitness on Airline and I spent 5 years as one of the best trainers at The Parks Heath and Fitness in Lakeview.


Currently I’m now a Personal Fitness Manager and working as a full independent contractor at G-Fit NOLA (my home gym!) I’d like to describe my training style as fluid. I pay attention to the person in front of me and have a strong understanding of biomechanics. I’m a certified functional strength coach and 4x first place men’s physique competitor NPC (I swept my first show found out how to look good and got bored with it); my passion is helping you.


If you have any questions or would like to meet me one-on-one to discuss training call me at (504) 335-7066.

Message David to Book a Training Session