Splayed beneath collarbones and tucked under neck muscles, brown fat appears more active and plentiful in leaner bodies, but may be present in most people, the studies suggest.

• 研究认为：大多数人都有的棕色脂肪常常延至锁骨下或颈部肌肉下，这对瘦人来说有更积极、更丰富的意义。