Who We Are

Lee is D.J.’s little brother, so growing up he got lots of hand-me-down porn to help him grow his sexual understanding.
D.J. and Marc were roommates in college.

At school D.J. taught Marc his first words in Hebrew: “Tochlee et ha betsim shelli” (Translation: Eat my balls). Marc used that phrase on his first date with Anat and it worked. She didn’t eat his balls but she thought he was funny and they all lived happily ever after. Writing a sex book together just seemed to fit the natural progression for everyone.


  • D.J. Gugenheim

    D.J. Gugenheim grew up in New York, Israel and Florida. At 16, he moved to LA by himself to pursue a girl, which needless to say didn’t go well – if only he knew then what he knows now about Sexual Fitness. Despite this itinerant lifestyle, he was admitted to UCLA a year early and studied theater and business. There, he won the Gilbert Cates award for outstanding production. He worked at the Woodrow Wilson Center and on Capitol Hill. He worked for the filmmaker Joel Zwick (MY BIG FAT GREEK WEDDING) and used that experience to produce a short film with Kenan Thompson (SNL). Following that, he worked at CAA, Paramount Vantage and the Universal–based production company responsible for the BOURNE IDENTITY franchise. He runs production and development for the indie film company behind THE KIDS ARE ALRIGHT, THE GREY, KILLING THEM SOFTLY and GRACE OF MONACO.

    Throughout his quest to tell great stories and enjoy life and love, it became apparent to him that everyone could feel better and be happier if they had more sex and more exercise and so he decided to find the right partners to share with people a simple and fun way to engage in Sexual Fitness.

    “I used to pull my groin during a hard workout, now I have people who do that for me.”

    -D.J. Gugenheim

  • Marc Fellner-Erez and Anat Erez-Fellner

    Anat was born and raised in Israel. She moved to New York in 2001, where she studied package design at the Fashion Institute of Technology. She is a graphic designer and an artist. Marc was born on the island of Guam and reached puberty in Northern California. He received his BA and his MA from UCLA’s School of Theater, Film and Television. Marc is an actor, an artist and a writer.

    The two met at the Brooklyn Museum on Marc’s 27th birthday and got married 8 months later. They have traveled all over the world and have lived in New York and the Caribbean. They now live together in Los Angeles with their son, Brooklyn, and their pussycat, Oscar.

    They both appreciate that if it weren’t for sex they never would have been born. Marc and Anat hope their parents are proud of their first published book. Live, love, laugh and be happy.

    “Sexual Fitness is the best sex exercise I’ve had all day, yet.”

    -Anat Erez Fellner

    “Sex exercising is so much better when shared with friends.”

    -Marc Fellner- Erez

  • Lee Asher

    Lee Asher was born in New York City and grew up in South Florida. He went to Arizona State University, where he opened up his own gym that focused on functional training. After graduating and traveling through Eastern Europe he became Tony Robbins’ #1 peak performance strategist. He is now living in Los Angeles as a corporate trainer.

    “My exes are just lazy! That’s why they’re my exes.”

    -Lee Asher (D.J.’s little big brother)

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>