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.
Printable Deck of 52 Playing Cards-These cards in suits of spades, clubs, diamonds and hearts are compatible for playing poker and other card games.They can be printed on plain paper or card stock and can also be printed on common business cards.rintable Deck of 52 Playing Cards-These cards in suits of spades, clubs, diamonds and hearts are compatible for playing poker and other card games. They can be printed on plain paper or card stock and can also be printed on common business cards.