I'm coming down with a chest cold...How much?

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cardio should I do? I normally do Zumba and I exaggerate my moves so I can get a better workout. I have asthma, not chronic, though. Given that the chest cold is trying to rear it's ugly head, I've noticed an increase in the need to use my fast acting inhaler. I'm going to Zumba tonight and thinking I should just do low intensity for my lungs sake. Any advice?
Thanks in advance!