Effex: Efficient Exercise

Effex: Efficient Exercise is a Kansas City personal training studio that delivers safe, effective 20-minute workouts using ARX (Adaptive Resistance Exercise) technology. Founded as part of the Efficient Exercise lineage that gave rise to ARX itself (Mark Alexander founded ARX in 2011 through his Efficient Exercise studios), Effex offers science-backed, time-efficient strength training designed to maximize results in minimum time.

The studio focuses on private, appointment-based sessions with adaptive resistance technology that automatically calibrates to each rep.