Yes, you can continue with mild or moderate activity if you have a cold with no fever. Exercise may even help you feel better — by temporarily relieving nasal congestion.
So how do you determine if you're too sick to exercise? Here's a good rule of thumb: If your symptoms are "above the neck" — such as runny or stuffy nose, sneezing, or sore throat — you can proceed with your workout.
However, if your symptoms are "below the neck" — such as chest congestion or tightness, hacking cough, or upset stomach — you should postpone your workout. Also, you shouldn't exercise if you have a fever, fatigue or widespread muscle aches. Rarely, exercising with a fever has been associated with inflammation of the heart muscle (myocarditis).
As always, use common sense. If you're not feeling well but still want to exercise, reduce the intensity of your workout and listen to your body. If your symptoms worsen with exercise, stop and rest. Missing a few days of exercise isn't the end of the world.
