Yes the do
they suck our energy and make us lazy . that is why after seeing tv for an hour or two we feel like going to sleep

Now a days each n everyone r dependent on gadgets.they do all the work which people used to do before . we feel lazy to each n everything as we know that there are machines to do that. people become weak n pale at that time people didn't need to workout because they used to perform a lot of gadgets have come we need to go to fitness camps, jog each day ,etc.