How Quickly Do You Lose Physical Fitness?

How Fast Do You Actually Lose Fitness?

Even though you’ll lose some fitness with breaks from training, periods of rest are still really important for the body — and the mind — especially after periods of arduous training. “Recovery is important from both a physical and mental standpoint,” says Campbell — it allows you to make greater fitness gains in the long run.

Running coach Neely Gracey, certified by the Lydiard Foundation and based in Denver, says she’s always taken a scheduled two weeks off at the end of each marathon season. She encourages her athletes to do the same. “Some want more time, some want less, but a period of no running to allow the body and mind to rest and reset is important,” Gracey says.

The five-time Team USA competitor says time off helps athletes avoid injury from muscle overuse, and it also helps reduce burnout, a sentiment which Campbell echoes: “Taking a break from working out can be beneficial [to] avoid burnout.”

However, there’s a notable distinction between intentional time off (like following an endurance event) and unintentional breaks in exercise (where you have no plans of getting back into a routine). In other words, a short break can be beneficial to avoid burnout and injury, but taking time off shouldn’t become a long-term lifestyle choice.

Another option is to take periods of active recovery, which includes doing low-impact activities like yoga, stretching, easy biking, house cleaning, or gardening. This can help reduce the risk of losing fitness.

Why? Returning to exercise after a long break comes with its own mental and emotional challenges.

Kelly Gillen, a runner who completed the JFK 50 Mile in November 2016, struggled mightily in this department. Logging double-digit-mile runs had been the norm, but after months of not running, 10 miles suddenly seemed “insurmountable.” “It’s definitely a mental thing [that was] really hard at the beginning,” Gillen says.