Need a new exercise regime ahead of the summer? Look no further... Prancercising!  Described by its 61 year old creator Joanna Rohrback, in uncomfortably tight white leggings, as "a springy, rhythmic way of moving forward, similar to a horse's gait," prancercising has become an internet sensation.  The workout includes trotting ("it's really hot!") galloping ("we are gonna really cut the noose and let it loose!") and shadowboxing ("it's better to be punching into space than in your face!")  If horsing about along a path is neigh your thing, watching this video will at least have you in stitches.