Sadie Kurzban is a certified personal trainer, full-time party girl, and founder of 305 Fitness.

Kurzban, a 23-year-old graduate of Brown University, has been featured in numerous media publications like Huffington Post, TIME, Well + Good, Joonbug, and Daily Candy for her unique ability to turn painful workouts into outrageous fun.

Just months out of college, Kurzban launched 305 Fitness, a workout that fuses high-intensity cardio with the sensual dance moves of her Miami hometown (hence, the 305 area code). Kurzban, who DailyCandy dubbed a “23-year-old ball of energy known for her strong following and her sweat- and smile-inducing workouts" has helped clients lose 50+ pounds with her nightclub-inspired dance method that incorporates a full-body workout set to pop, hip hop, and house music.

Kurzban is a certified personal trainer by the American Council on Exercise (CPT), a certified strength and conditioning specialist by the National Strength & Conditioning Association (CSCS), a fitness nutrition specialist by the National Association of Sports Medicine (FNS), a certified Spinning instructor by Mad Dogg Athletics, and an accredited CPR/lifesaver professional by the American Heart Association.