If you think you might be injured
There's a difference between being sore and being injured.
"Muscle soreness is not a sharp stabbing pain," White said. "It's not a radiating pain that you would get from any type of nerve damage, there's no tingling."
If you do experience stabbing or radiating pain exercising could make things worse. "Most ailments will probably go away after a few days of rest, but taking the risk to workout while injured could aggravate the injury and leave you unable to exercise for an extended period of time," Fried said. "It's just not worth it."
Fried noted that, again, the best course of action is to get checked out by your doctor if the pain persists.
[Photo via Getty]