Is a fitness brand that blends the concept of men and women participating together with workouts that are time focused, efficient and results-oriented.  It’s fun and flirty as any situation is when men and women are together.

co-ed ‎(comparative more co-ed, superlative most co-ed)
Of an educational institution, that teaches both males and females.  Of any location, that mixes males and females.
Used to just refer to colleges but the term has morphed in main stream language to mean both men and women can participate.

cr-un-ch ‎(verb to crush, noun exercise the core)
In fitness, when you say “crunch” people think about abs.
In life, when you say “crunch” people think about getting stuff done in a short amount of time.