Laptops are widely used by people in various fields, especially by white-collar workers and young people. In our daily life, we can see the use of laptops everywhere, in companies, institutions and public places, we can see the use of laptops to access the Internet, check various information and play games. Long hours of Internet access and incorrect use have not been studied before for possible damage to the human body. A study presented at the 66th Annual Meeting of the American Society for Reproductive Medicine in 2010 suggested that the use of laptops may have adverse effects on male fertility, possibly through the induction of DNA breaks and reduced sperm forward motility. In the study, researcher Dr. Avendano analyzed samples of semen from 15 men. These samples were divided into two groups. One group was exposed to a laptop computer with wireless Internet access for four hours, while the other group was not. Both groups of samples were incubated in a constant temperature (25 degrees) incubator, where thermal effects had been excluded. Semen parameters such as: sperm concentration, motility, morphology, and viability were measured before incubation, and post-incubation sperm quality examination showed a significant decrease in sperm motility (73.5 ± 8.2% vs. 63.6 ± 7.3%, P < 0.05), a significant increase in immobile sperm (18.8 ± 6.9% vs. 28.3 ± 7.3%, P < 0.05), and a significant increase in sperm DNA breakage (6.3 ± 8.1% vs. 13.1 ± 9.2%, P < 0. 05). The results showed significant DNA damage and reduced viability in the laptop group. It has been shown that normal sperm viability and good DNA fragmentation are necessary for fertility. The use of laptops with unlimited Internet access and close proximity to the testes may reduce semen quality through non-thermal effects, which in turn may reduce the chances of fertility. It was also concluded that "studies have confirmed that mobile phones can reduce sperm quality, and the thermal effects of laptops have also been looked at, and this is the first study on the effects of exposure to laptops and radio electromagnetic waves from wireless Internet access on sperm quality in an in vitro model". In addition, the study suggests that using a laptop on the knee may raise the temperature of the scrotum, which is important because it has been shown that elevated temperatures are detrimental to normal sperm production. This study is the first study on the effects of laptop wireless Internet access on human sperm, and the results demonstrate that it can cause adverse effects through non-thermal mechanisms. Ultimately, people who use laptops are cautioned against using them on their laps, especially young people in their reproductive years.