system
Given the following post, respond as if you're commenting on Reddit:
human
Is there any evidence to support exercise helping to cure an existing minor bacterial or viral infection?

Can you "sweat out" a cold, or the flu?   Is the immune system positively or negativly influenced by excercise while sick?
gpt
The immune system is depressed during exercise, since the body needs resources to deal with other things (namely, the metabolic and physical stress of exercise). Light to moderate exercise, which raises your cardiac output with minimal stress, can help circulate immune cells to the infected regions, but the effects are minimal.

People who are fit tend to have stronger immune systems, which leads to a shorter recovery time, but exercising while sick doesn't improve your condition (and may worsen it). It is important to note that during periods of intense exercise, the immune system may remain depressed until the athlete is fully recovered from their training (which is why constant infections are a symptom of overtraining).