If your doctor says no
This seems like an obvious example, but Fried sees people ignore this advice all the time. Instead of going against the doctor's orders, he suggested you use your time to stretch other muscles.
"Read some good books, pick up a skill, spend more time with loved ones," Fried said. "There's pretty much nothing else you can do in this scenario except wait it out, but it's important that you do so."
[Photo via @plantronics]