13. Grapefruit Oil

Grapefruit is well known for its benefits, be it for the amounts of Vitamin C or its immune system boosting capabilities. And according to Jennifer Lopez, its smell.

The famous actress/singer claims that she can lower her appetite and increase her weight loss simply by sniffing grapefruit oil.

She carries around a jar of the liquid, and as soon as she feels hunger, she takes a little sniff and all of her problems are gone.

Some say the aroma of the oil affects liver enzymes and reduces hunger by doing that, while others say it’s all a hoax.

Whatever the case may be – it’s weird, it’s extreme, and it makes this list.