The very first time Valerie was made to run in the nude, she intented to run keeping her feet flat, to prevent her tits from moving too much.
Of course, she needed some training.
		In this exercise, She was asked first to run on the spot, hands behind head while lifting her knees high and to increase the speed until her tits gyrate.
She must then keep the pace as her tits are whipped in full motion. Of course, she is not allowed to flinch, slow down or stop before being ordered to.