It has been widely known that sleeping at the right time and for right, duration has numerous benefits. Alongside the big difference that it makes to one’s physical health, growing evidence shows that it affects sexual health too. Sleeping too little or too much has a drastic impact on a man’s ability to impregnate his partner. The adequate duration of rest is 7-8 hours. If it is less than 6 hours or more than 9 hours per night, the probability of making the partner conceive reduces.
In any given month, the probability of conception has a 42 percent reduction if men slept less than 6 hours or more than 9 hours per night.

Why does less sleep cause infertility?
Sleep seems to have an impact on male fertility and snoring may be the first sign. If a person has disturbed sleep, he is twice as likely to get his sperm count reduced by up to 30 percent in comparison to those who have a sound sleep. Testosterone is a male hormone that is crucial for reproduction and the majority of daily testosterone release in men occurs during sleep. Total time of sleep has thus been certainly linked with levels of testosterone in the body. Those who suffer disturbed sleep with less than six hours a night also had lower sperm quality. Poor sleep interferes with the body’s ability to produce sperm.

What are the early symptoms?
Infertility among men is becoming a widespread problem. Snoring most nights and feeling ­excessively sleepy during the day are classic signs of obstructive sleep apnea (OSA). Snoring affects men more than women and occurrence is almost twice that for women. It occurs when the soft tissue in your nose and throat vibrates when you sleep. Being overweight, drinking a lot of alcohol, smoking and allergies can further trigger. Apnea means that the person stops breathing for 10 seconds or more at a time, several times a night. Over a period of time, this can lead to heart problems and even stroke.

What are the consequences?
A man’s fertility generally relies on the quantity and quality of his sperms. If the number of sperm a man ejaculates is low or if the sperm is of poor quality, it will be difficult, and sometimes impossible, for him to cause a pregnancy.

Out of all the infertile couples, the problem lies solely in the male partner in 20 percent cases and 5percent of them have some kind of fertility problem with low numbers of sperm in his ejaculate. However, only 1 percent suffer from azoospermia – no sperm in his ejaculate.
Male infertility is usually caused by problems that affect either sperm production or sperm transport. Poor sleep for more than three weeks may cause lower sperm count, deformity in shape and decreased the ability to move ahead. 
Sperm transport problems are found in 30 percent of them. Blockages (often referred to as obstructions) in the tubes that take sperms away from the testes to the penis can cause a complete lack of sperm in the ejaculated semen.

Can it be prevented?
When you have disturbed sleep and lower sleep time it is quite feasible for the person to have an unhealthy lifestyle, decreased libido – loss in sexual interest.