Are you an adrenaline junkie? Then we've got the pin for you -- celebrate your adrenals, the glands in charge of making you look for your next big rush. The adrenal glands sit atop your kidneys and work with the hypothalamus and pituitary gland to regulate metabolism and immunity. Most famously, the adrenal glands squish out the hormone adrenaline, which controls the body's “fight or flight” response by speeding up your heart rate and otherwise pumping you up. They release sex hormones estrogen and testosterone, also aldosterone, which helps keep sodium in the body, and stress hormone cortisol. Relax — don't do it. This cute little 1.25" printed aluminum pin comes packed on a card and was made in China. I Heart Guts happy organs put a smile on your face and smarts in your brain! Our adorable organs make the perfect gift for everything from a broken heart to a tummy ache. Get your feet wet in anatomy or bone up on your physiology with our nerdy plush toys! I Heart Guts is the brainchild of an anatomically obsessed illustrator who loves internal organs and all they do. Founded in 2005, our bare-bones family operation strives to offer plush organs with love, style and geeky puns. I Heart Guts plush organs were named Best of Toy Fair by Popular Science magazine in 2014.