The circling hip action of Latin dance. It doesn't come from swinging the hip, but from alternately bending and straightening the knees – the hip merely follows.
An insider word for tap dancers in the rhythm tap tradition: close-to-the-floor footwork, sound over looks, improvisation as the default. Closely tied to Harlem's Hoofers' Club.
One body part moves while the rest deliberately stays still – head to the side without the shoulders coming along. That separation is where sharp hits come from.
The reinforced ballet shoe, built from a stiffened toe box and a supporting shank. It gets fitted rather than simply bought – and only after you pass the readiness check.
The controlled rise and lowering of the body through ankle, knee and ball of the foot. Four of the five standard dances live on it — only the tango deliberately stays flat.
Tap dance's basic building block: a brush forward plus a brush back in one motion — two audibly separate tones, with no weight on that foot. Brush plus step with full weight would be a flap.
The upper line of head, neck and shoulders sitting on top of the frame. Its tension comes from the upper back, never from the hands — it is the channel every lead travels through.
BMR is your basal metabolic rate at complete rest; TDEE is total daily expenditure including everyday movement and training. Nutrition targets always work off TDEE.