It turns out heading to the gym daily doesn’t give you a free pass to sit down the rest of the day, the New Scientist reports. According to the Mayo Clinic, there is a significant link between sitting down and premature death, even if you exercise regularly. Researchers don’t recommend giving up on exercise though. While a workout cannot undo hours of sitting, "active couch potatoes" fare better than people who sit a lot and do not go to the gym.