In many styles of Salsa dancing, as a dancer changes weight by stepping, the u dancing actually has significant amounts of movement above the waist, with up-and-down shoulder movements and shifting of the ribcage.
In many styles of Salsa dancing, as a dancer changes weight by stepping, the upper body remains level and nearly unaffected by the weight changes. Perhaps ironically, the Cuban Casino style of Salsa dancing actually has significant amounts of movement above the waist, with up-and-down shoulder movements and shifting of the ribcage.