I'm quite propense to catching the flu or some kind of cold every winter despite all my efforts to prevent it; this usually leaves me ill for a couple of weeks. I've tried some light training with flu, only to discover that despite my legs being as strong as ever, I run out of breath after a very short time.
I know that this is caused by the flu affecting my respiratory system, so I would like to know if there's any way that I could train my legs without forcing my respiratory system, so that I can at least keep the strength in my legs during my illness.
Thanks.