A song thin legs, three times sweat burning fat, the leg has lost 6cm (Cheap Thrill)

Let's slim our legs together today
The core tightens and the back straightens into a squat
The action looks simple, but it really burns fat
Keep your thighs at 90 degrees to the ground.
Movement range size according to their own physical condition
Once you do it, your legs begin to sour, and three times in a row is too fat burning.