It can look almost too easy: athletes gliding along on a bike, runners shuffling at a pace slower than most people\u2019s warm-up, or someone strolling so gently it barely seems like exercise at all. Yet this kind of effortless movement is at the heart of what\u2019s becoming known as zone zero exercise.<\/p>\n
The idea runs counter to the \u201cpush yourself\u201d culture of gyms and fitness apps.\u00a0<\/p>\n