Charles Hicks on Instagram: "Stop running on concrete. Your knees are keeping score. Running on pavement sends 3-4x your body weight through your joints. Most runners don’t notice until the damage is done. It’s just physics. And it’s exactly why I took today’s run off-road. The obvious part: less impact. Trails and grass absorb the shock that concrete throws straight back into your bones. Your joints won’t just feel better today, they’ll feel better a decade from now. But here’s what I didn’t ex