Originally Posted by UCSF2012
From this doctor's perspective, there's nothing that I'm too concerned about. Stop listening to medical advice from lay people, as they're often made up medicine.
There's nothing wrong with being winded during warm-up. I often do 2-3 hours of tennis without problems, but the first 15-20 minutes is the most difficult. Just keep it up and eat right.
If you started doing barefoot HIIT 10-15 times per week, you'd no longer be winded in the first 15-20 minutes.
I also bet you are eating too much oatmeal (bad carbs) and too little bacon (good fat and protein).
Us lay people know what we are talking about.