1. Radiation
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Wifi signals emit non-ionic radiation or low energy which is almost the same as mobile phone signals, microwave, radio, and ultraviolet light. Wifi signal is classified as a very low signal that is about 0.1 watts on a computer hotspot or modem. Such relatively small radiation can still be tolerated by the body
2.  Insomnia
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A study conducted in 2007 in the United States showed that those exposed to electromagnetic radiation exposure were significantly more difficult to sleep asleep and experienced changes in brain wave patterns. Ultimately this can trigger high levels of depression and hypertension (hypertension) which causes poor sleep quality. To that end, health experts strongly recommend that keep the body from the phone or Wi-fi network during sleep.

3. Damage Brain Cells
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The World Health Organization (WHO) and the National Toxicology Program have studied the effects of non-thermal radiation on human health. The result is that radiation exposure that occurs can significantly increase the risk of serious illness, especially for children. Why? Because children have a nervous system and the brain is still in the process of development. They have skulls that are thinner and smaller than adults. This can result in easier radiation to penetrate deeper into their brains. Make brain cells become damaged, resulting in unwanted effects such as headaches, easy fatigue, concentration problems, and memory loss in the short term.

4. Lack of concentration
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Increased Wi-Fi radiation can lead to reduced brain activity. This will ultimately affect the power of concentration and memory in the long run.