::: How to do 90`s :::

The 1990 is a breakdance move which resembles a rapidly spinning one-handed handstand. It is a type of spin in practice, but many consider it a power move because it is so flashy and is often begun with significant momentum like other power moves.

Step-by-step
The description assumes clockwise rotation.

From a standing position, the right leg is lifted across the left. The body is thrown down to the right, onto the right hand, as if doing a cartwheel. The left hand comes down close behind and the left leg kicks upward. The breaker kicks up into a handstand, but kicks also with the right leg, causing the body to spin. The breaker pushes off with the right hand and snaps the legs together upon reaching the apex. This should accelerate the spin. Once the spin has started, the right hand lifted away and the breaker is left spinning rapidly on the left hand.

Tips
Once the 1990 is mastered, some actually find it easier to maintain the handstand while spinning, but in the learning stages it is essential to master the stationary handstand first.
Spins will be faster and longer-lasting if the fingers are kept clear of the ground, ideally balancing on the pisiform bone of the hand. This lessens friction with the ground.

Variants
The standard 1990 is performed as a pure one-handed handstand. However, one variation includes alternating between right to left hands in a regular rhythm to continue spinning and maintaining balance. Far from looking weaker, breakers can make this move look very powerful and aggressive as they "stomp" the ground and accelerate their spins. The 2000 is the most well-known variant of the 1990. Another well known variant of the 1990 is the elbow spin, also referred to as the "Hurricane" or "Hurricane Spin". This move involves the same motions as the 1990 but spinning on your elbow with your forearm as a balance. This move was pioneered by B-Boy Physicx. B-Boy Rookie performs these as one of his trademark moves.

Deadman 90's:
Similar to the 1990, however there is no alternating between hands before the spin. The bboy spins on the same hand he initially places onto the ground, making the deadman 90 easier to balance but harder to create momentum. Also, since the rotation is in the opposite direction to the 1990 on the same hand it involves. Many recommend spinning on the central area of the palm,requiring a flat surface placed over the palm. spinning on a different area of the palm.