coming in two forms, classic or skate, nordic skiing is the original and hardest way to
ski. you use every muscle in your body, and race 5-50k. an average practice for high school is 10-15 miles.
classic is a back and forth motion, primarily using your arms
skate is similar to skating on
ice, except you also use your arms some, but mainly legs.
there is no stopping because of....
too
cold
too long
bad
wax
bad snow
sore muscles
darkness
season (skis with wheels)