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Right splits are splits with your right leg in fron of you.
yes usher can do the splits he did the splits at the super bowl you can watch it on you tube if you missed it
The plural of split is splits.
As in "the acrobat can do splits easily".
Three.
Front splits are a LOT easier! If you start by doing simple hamstring and hip-flexor stretches, you can often improve your splits by a lot!