action; athlete; balance; blue; chicago; chicago sights; color; colors; control; creative; creativity; danger; dangerous; energy; equilibrium; extreme; extreme sport; fast; freedom; freestyle; horizontal; identity; illinois; individual; individualism; individuality; jump; jumping; light; male; male teenager; mind; mind control; motion; performance; performing; recreation; risk; sights; skateboard; skateboarding; sport; sports; sunrise; sunset; teenager; us; youth