Primates with longer thumbs tend to have bigger brains, research finds
: A confident gesture after medical procedures or business meetings. big mature tumbs
: Mature adults frequently use the gesture during video calls or selfies to show they are "doing well". Primates with longer thumbs tend to have bigger
: This suggests the brain and the ability to use tools (dexterity) evolved together in mammals. 🏥 Health in Mature Thumbs big mature tumbs