‘Bingo wings’ – also known as ‘bat wings’ – are collections of fatty cells underneath the arm, which can sag down and wobble and look a little like wings. As we age, the structural collagen in our bodies becomes increasingly weaker, leading to the sagging we see. They typically affect women more than men (though men can get them), due to two main factors. Firstly, women have a wide distributio n of fat around the whole body, whereas for men fat is largely centred over the abdomen. Secondly, women undergo a series of hormonal changes which men don’t, which can affect the size and structure of their fat cells.
Answered by Aneel Bhangu