Thing is though that people present as shorter or taller than they are based on posture, and it's not just people, all mammals do it. There's a saying in Engli

Thing is though that people present as shorter or taller than they are based on posture, and it's not just people, all mammals do it. There's a saying in English when someone needs to show bravery: "chin up". What do you think it means, other than "stand straight and tall"?