height

I have a TVC product called ? YOKO HEIGHT ? which claims to increase height of people aged between 15 and 30.( I am 18 years old). It consists of 2 plastic sheets shaped like shoe soles. It is to be placed inside the shoes and then one should walk wearing the shoes. While walking, this YOKO HEIGHT would stimulate the nerve endings at the base of the feet, causing the pituitary gland to release more growth hormones. This hormone would make one taller. This is what the manual says.Now my question to you is : will it be haram to use this YOKO HEIGHT? I have heard that there are almost no side effects of using this though I am not completely sure. Is it going against the natural growth?I did not buy this product but got it for free with another product. My parents want me to use this though right now I don?t want to. If this YOKO HEIGHT is really haram, how will I convince my parents about this?