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.
There are 52 cards in a deck, if you include the wild cards(joker), 54. In 52 cards there are 13 ranks and 4 suits, having the Ace as the highest in most card games. The suits are Diamonds,Clubs,Hearts and Spade. Standard card decks usually have Hearts and Diamond in Red and Clubs and Spades in Black.