Hi, I recently retired and am working part time and consequently, have doubled my exercise routine (2-3 hours a day) basically, my routine is:
4 hours of Yoga a week
10 miles of walking vigorously a week
10-12 miles swimming a week
2 spin classes a week
Despite my doctor claiming I am the poster child of health, I’ve been sick for 5 weeks with a virus that ran rampant in my area (most everyone was sick for at least a month with this virus) I am finally recovered, and 2 weeks later, have come down with a ferocious cold.
I did yoga throughout the virus illness however, I just read that
"doing Yoga classes when you are in any stage of dealing with a cold or flu will likely result in becoming more sick and being sick for a longer period of time."
The article went on to explain, however, I was especially struck with the paragraph:
If you are full-out sick, many restorative poses should be avoided, especially postures placing the head below the level of the heart and lungs. Sometimes with colds, we encounter infections of the sinus and inner ear. When we place the head below the level of the heart, [B]extra blood pressure moves into the infected inner ear which could lead to serious damage. [/B]Inverting the head can also create discomfort with sudden pressure or fluid release coming from the sinus.
Can anyone verify this? I’m interested because in the midst of the virus, while continuing to do yoga and other exercise, I developed a bad inner ear problem with terrible balance problems that lasted for weeks. I found that inversions actually cleared up the dizziness at least for the day. Now I’m wondering if the yoga actually caused the imbalance. Does anyone know what “serious damage” means?
How long does one refrain from down dog and other like poses with a cold? Thanks for any light you can shed on these questions.

as usually our bodies know exactly what is necessary. We tend to get in the way. Generally, nature demands us to slow down when we are sick. She’s pretty good at it, as you will fall on your behind if you choose to ignore her! So, I would suggest restorative poses, such as supported badha konasana and other supported back bends where the head is above the heart. I would even do supported child’s pose, supported upavistha konasana, and supported janu sirsasana. I would also try doing some pranayama: a bit of kaphalabhati, followed by a longer period of nadhi shodhana (alternate nostril breathing). If you do want to do more asana, I would suggest doing a slow and deep hip opening and twisting practice, to keep you grounded and to release toxins more fully. Oh and of course SAVASANA up the wazoooo!!! Give yoga nidra a try, if you haven’t already. To keep it simple it’s savasana for 30-60 min! Deep relaxation and incredibly healing 
I still wonder if anyone can answer my question that I originally also asked about inflicting serious inner ear damage when doing poses where the head is below the heart when you have a cold.