FETCH! with Ruff Ruffman

Relaxin' with Ruff (1x17)

Uitzenddatum: Jun 26, 2006

Ruff decides to calm down from the stresses of running a show. The kids learn to relax with yoga and to calculate heart rate (pulses in 15 sec * 4). Next, they mathematically measure their "fear factor" at Canobie Lake Park, an amusement park in New Hampshire.