The Race Is On to Be the Peloton of Weight Lifting

Three companies — Tempo, Tonal and Forme Life — are competing to supplant cheap dumbbells with smart machines priced in the four figures.

These would-be barbell juggernauts have some heavy lifting to do, though. Strength training has always had its adherents, but it has never achieved the mass boy-band fan-like devotion of cardio forms like Jazzercise, Tae Bo, and more recently, spinning… READ MORE @ New York Times