<span class="s1">T</span>ypically, a visit to my parents' house means nightly excavations of the refrigerator. This usually happens at around 3am while suspended in that dull familiar state of predatory, jetlagged inertia. The hypothalamus is only about the size of the chickpea but it oversees everything from our circadian rhythms to our appetites, and it plays a vital role in how we form emotional attachments. No wonder that mine regresses when I'm back in my old bedroom. Follow us on <a href="https://www.facebook.com/thenationalArtsandLife">Facebook</a> for discussions, entertainment, reviews, wellness and news. Follow us