Your suspicions have been confirmed: no one really pays attention on conference calls.

More than a quarter of respondents in a new survey admitted to falling asleep during a virtual meeting. Other respondents admitted to making other phone calls, snacking, exercising or playing videogames during their conference calls.

And here's something to visualize next time you're stuck on the line: 47% of respondents said they have used the bathroom during a conference call.

The survey was conducted by InterCall, a company that makes services for conference calls. InterCall asked more than 500 full-time workers what they're really doing when they hit that mute button.

Trips to the bathroom may be happening more frequently thanks to the rise of mobile phones. InterCall found that 21.2% of conference-call minutes in 2013 were on cellphones, up from 19.4% two years prior.