27+ Little-known Facts of 'Dirty Dancing'

Painful Dancing

Swayze was a skilled dancer, much like in the movie, while Grey had natural talent but no formal training. Swayze actually had a chronic knee condition, but he persevered through even the most challenging scenes because he enjoyed dancing so much.

Before Dirty Dancing, Swayze had been attempting to steer clear of scenes that involved excessive dancing, but for this one, he just couldn't help himself - and had to suffer through the discomfort.