Knife Hands
Do you know what a knife hand is? This is the gesture military personnel makes to explain something. It involves aligning the fingers and keeping the hand tight and flat. Soldiers often use this to give directions even when they are done with service.
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Getting Up Early
Sleeping in is probably different for you than it is for a soldier. When a military man or woman says that, they probably mean they stayed in bed until 7:00! Waking up early every day takes its toll.