Why You’re Paying So Much to Exercise

Millennials are turning the fitness industry upside down.
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On a frigid Sunday this month, Rianka Dorsainvil, a 29-year-old financial planner outside Washington, D.C., found herself running up a steep, snowy hill wearing a 20-pound vest and dragging a 215-pound man behind her.

She was paying for the privilege. The man harnessed to her was her personal trainer, who runs a studio out of his home and micromanages not just Dorsainvil’s workouts but her meals, too. She calls him the “mad scientist.”