Summarize Teens need adequate deep and REM sleep to rebuild long-term memory for learning, focus attention for driving and maintain health and fight obesity, said Dr. Matthew Edlund, director of the Center for Circadian Medicine and author of “The Power of Rest.” “From a public health standpoint, I look at this and I am scared stiff,” Edlund said. “They’re so connected to their machines that they’re treating themselves as though they don’t need any rest.”

Dr.Matthew Edlund is the director of the center for circadian Medicine and the author of

The Power Of Rest ...

He statesTeens need adequate amount of deep sleep to rebuild long term memory for learning and to maintain good health and fight obesity.

The above mentioned person fears the fact that the teens now spend their time in playing video games and are so attached to their gadgets / electronics that they don't rest and act as though their bodies don't nees any rest .

He means that teens are so immersed in these things that they don't sleep.

Hope you understood.

bevy means a large group or thing of a certain kind.