Sleep is a bodily activity which characterized by altered consciousness and reduced interactions with the surroundings. For humans and all other animals, sleep can now be considered as a necessity together with food, oxygen and water. Sleep plays a vital part in a person's general well-being and health condition.

Recently, a study suggested that too little or too much amount of sleep can be negatively linked to a man's ability to cause his partner to bear a child. Study lead author, Lauren Wise, a professor of epidemiology at Boston University School of Public Health, claimed that the proper duration of sleep should supposedly be between 7 to 8 hours.

Wise, together with her colleagues, have found that less than 6 hours of sleep can be as damaging to a man's fertility. It was found that among the 790 couples that researchers have used in the said study, less than 6 hours or more than 9 hours per night is most likely seen to cause the reduction of a man impregnating a woman.

In one of their statements, CBS News has revealed that Wise and her team has additionally noted that by using the 8 hour point of reference, men who was able to sleep for less than 6 or more than 9 hours have a 42 percent reduced likelihood of the ability to produce a child.

According to Wise, the primary reason is very simple - hormones. As per Evening Standard, she added that the total sleep duration has been found to be positively correlated with a male's testosterone levels which, in turn, takes a significant role during reproduction. The majority of testosterone in men is being released by the body at night during sleep period.

However, the team has emphasized that although the study has found an association between sleep and fertility, it is yet to be used to prove cause and effect. Hence, more amount of research is still required.