All the gentile races had their own form of this practice though it was not called Yoga. The Asians such as the
Chinese have utilized Qigong, Tai chi and related practices, the Aryans and East Asians performed what we generally know as Yoga and the Blacks specifically identified with dance.

Dancing and body movement were performed by all the gentile races in some way or form. All of these emphasized total body awareness, union within the mind body and soul, developing physical strength and capability as well as
achieving a spiritual state of being.

Traditional African dance is powerful and physical and depends on coordination and synchronization within body. Its utilizes the concepts of polyrhythms in which the shoulders, chests, pelvis, arms and legs may move with different rhythms in the music, and total body articulation and isolation of parts of the body.

The traditional movements also include, depending on the dance, hip and rhythmic gyrations of the back and lower spine,movement of the hips to open up the hip centers, body shaking, movements of the cranial with knees bent (as seen in many asian spiritual practices such as Qigong) and foot stomping. 

With further observation of the dances, I have seen many similarities between yoga and the traditional dances such as use of mudras, rolling of the neck, the cobra pose, spinal twists, the warrior pose and other yogic positions but this is performed while maintaining constant movement of the body. The movements range from simple and regal to complex and fast. This takes control and connection. 

One wonderful example of this is the African dance called the Yanvalou. It originated in West Africa and was brought over to Haiti during the Trans-Atlantic african slave trade along with many other traditional and african pagan religion. The Voodoo based practices today in Haiti and in some parts of the Americas was derived from the official Vodun religion based on the wisdom of the Serpent, in Africa.

Voodoo

The Yanvalou is a Vodun dance that invokes and calls upon the all important serpent/snake deity called Damballah who brings upon wisdom and purity. Damballa is another name for the kundalini serpent.

Yanvalou dance is said to be one of the most important of the Vodun based dances and is usually performed before ritual. The dance consists of spinal twists and manipulations, Contractions of the solar plexus, undulations of the back from the base of the spine upwards while knees slightly bent and releasing of the chest. This mimics the movements of the serpent or the  waves of the sea. 

The Yanvalou is performed at a slower tempo so that trance can be obtained. Dancers allow their body to relax while working at the same time and expand the breath movement throughout the entire body on a vertical axis. With Yanvalou and other derived dances such as zepol, banda gede, mayi and parigol, I note that many of these dances in tribute to "Damballah" put emphasis on the lower spine, hip and sacral area while also grinding, contracting and moving the pelvic area to stimulate the sexual energy.

In speaking of the kundalini and of spiritual energy being invoked through movement, In Nigeria during Yoruba ceremonies, many describe their progress of their shamanistic dancing culminates in a surge of heat rising from the base of the spine.