The scent of strawberries can speed up weight loss. That's from Chicago researchers who found that the fragrance of the berries facilitates the release of endorphins. These are neurotransmitters that enhance mood and muscle performance, so you automatically walk faster without even trying. Use a strawberry scented shampoo or lotion before heading out the door for a walk. Researchers add you can boost your metabolism by 20 percent when you wear the scent.