What do you think about wireless networks having a health threat?

Are these wireless networks safe?? Most wireless networks operate at a frequency of 2.45 GHz, which means that these transmitters send out radio waves at 2,450,000,000 cycles per second. This is the same frequency at which microwave ovens operate. It turns out that this frequency is ideal for cooking food as it was discovered that 2.45 GHz uniquely excites water molecules to such an extent that it causes them to heat. This is called the thermal effect of radio frequency (RF) radiation. Like humans, most food has high concentrations of water and high-powered microwave ovens will cause food to heat at a very quick rate and voila ? dinner?s cooked!

- download.com

Tell me what you think? And does this mean i can cook food just by sitting on my pc!