Not enough sleep or disruptions to the sleep-wake cycle (such as those that may occur with shift work or travelling to a different time zone) cause the physiological state known as fatigue. Staying awake for 24 hours leads to a reduced hand-to-eye coordination that is similar to having a blood alcohol content of 0.1.
There are 13 hearts in a standard 52 card deck. There are also 13 diamonds, 13 spades and 13 clubs.
How many jacks are in a standard deck of cards? There are 4(four) jacks in a standard deck of cards. 42 or 48 All 4 Queens faces are face on and have 2 eyes each = 8 eyes King of Diamonds head is side on so you can only see on eye. There is one Ace of Spades in a standard deck of 52 playing cards.