By Daniel Hunter
Businesses are being encouraged to implement standing meetings and standing desks by a new campaign.
The On Your Feet campaign argues that sitting for long periods of time are linked to certain health problems like heart disease, type 2 diabetes, cancer and poor mental health.
The campaign wants businesses to encourage their employees to stand up more, walk around the office and work at standing desks and hold standing meetings.
Experts even claim that the problems occur in physically fit people, like those who cycle to work or work out at the gym. It is thought that prolonged sitting slows metabolism.
The On Your Feet campaign has partnered with Get Britain Standing and the British Heart Foundation (BHF).
A joint survey revealed that more than a third of men (37%) and nearly half of women (45%) spend less that 30 minutes of their working day on their feet. But 78% said they think they should spend more time standing, and nearly two-thirds said they were worried about the health risks of sitting down all day at work.
More than half said they regularly eat their lunch at their desk.
Gavin Bradley, from Get Britain Standing, told the BBC: "We're all victims of our environment, we've taken a lot of activity out of the workplace and we're sitting longer and longer.
"We need new and innovative ways of addressing the issue.
"Stand up when you're on the phone or in meetings, do everything you can to avoid sitting."
Lisa Young, project manager for the BHF's Health at Work programme, said: "We're all guilty of being too glued to our screens sometimes, but these results show just how far the couch potato culture has infiltrated the workplace.
"Too many of us are tied to our desks at work, which could be increasing our risk of developing cardiovascular disease.
"That's why we want workers to get up and get moving on 24 April and take a stand against cardiovascular disease.
"A bit of healthy competition in the workplace could go a long way to reversing this trend whilst raising vital funds for our ground-breaking research."