Our Team

Emily Mizer

During COVID, Emily left the insanity of Los Angeles for a month-long writing sabbatical on the Vineyard, with the intent to extend it to two months if she liked it.  That was the summer of 2020.  She’s still here.

With a background in film, Emily is no stranger to changing locations often.  Her first priority has always been to find a boxing gym, no matter where she is.  Strong Martha and Charlie welcomed her with open arms, and provided the type of community she had been found lacking in previous gyms: one that actually cares.  She began co-teaching a weight-lifting class in the mornings and, like Sam, slowly took over more of the class load and responsibility until the gym changed hands in the summer of 2022.

Emily’s started her love of boxing began at Bas Rutten’s Elite MMA gym in Thousand Oaks, CA, but being a southpaw, Emily she always struggled with finding to find the right trainer until she met Charlie and joined the Strong Martha community.  In addition to boxing, Emily has worked with a personal weight-lifting trainer since 2017.  She also trains in Brazilian Jiu Jitsu and loves taking the doodles (her extremely cute dogs) on long hikes every day.  

Emily teaches four weekly strength-training classes, as well as the occasional boxing class.  She’s available for both boxing and weight-lifting private sessions.

In her spare time, Emily is wrapping up her first novel – extending that writing sabbatical as long as she can! – and freelancing on the occasional film gig that piques her interest.

• TOUGHER • FASTER • STRONGER

• TOUGHER • FASTER • STRONGER



Sam Rothberg

Sam came to Martha’s Vineyard for music, stayed for the peace and quiet, and now runs Strong Martha with his biz partner, Emily.  

A part-time islander for the past decade, and a full-time resident as of 2019, Sam was quite possibly Charlie Giordano’s first student when the gym first opened; he began teaching classes himself that same summer, and slowly took over more of the class load and responsibility until the gym changed hands in the summer of 2022.

Prior to Strong Martha, Sam trained at Uppercut Boxing Gym in Minneapolis and the legendary Brotherhood Boxing Club in Brooklyn.

Sam teaches the four weekly boxing classes, and is also available for private sessions.

In his non-existent spare time, he runs several other businesses including The Dukes of Circuit Avenue, a wedding band on the island.