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.
The deck of 52 French playing cards is the most common deck of playing cards used today. It includes thirteen ranks of each of the four French suits, clubs (â£), diamonds (â¦), hearts (â¥) and spades (â ), with reversible court or face cards. Some modern designs, however, have done away with reversible face cards.he weight of an average B8-sized playing card is 0.063 ounces (1.8 g), and a 52 card deck 3.3 ounces (94 g). The thickness and weight of modern playing cards is subject to numerous variables related to their purpose of use and associated material design for durability, stiffness, texture and appearance.