Shhh — the secret’s out! Experts say a TikTok fitness trend that prioritizes the sound of silence can support heart health. “Silent walking” is the practice of stepping out without the distractions of devices or music. Devotees of the “rawdogging” movement maintain that it is a whole-body boon that builds mindfulness, awareness and intentionality. While Zen Buddhist monks have long practiced silent walking, or “moving meditation,” content creator and “Okay Sis” podcaster Mady Maio