Comment by michael1999

You probably were. Tight shoulders and ribs inhibit inhalation. Once you loosen up and grow stronger, you will increase the volume of your ribcage. As you do that, the tissues of the lungs unfold or stretch to fill them. Some corners of your airway will get cool/fresh air for the first time in ages. It all feels pretty odd -- tickles, itches, or even a fearful asthma response.