Image by kj developing healthy habits can be overwhelming if you do not know where to start .
如果你不知道从何开始,培养健康习惯会让人喘不过气来。
According to physicist bernard leikind in a technical article in skeptic magazine ( vol. 15 , no. 4 ) , known carcinogens such as x-rays , gamma rays and uv rays have energies greater than 480 kilojoules per mole ( kj / mole ) , which is enough to break chemical bonds .