Weight loss was my biggest reason for starting exercising. With a stomach getting out of control, I remarked to a coworker one day that I could breathe, or I could tie my shoes, but I could not breathe and tie my shoes at the same time. Another coworker (who was himself hefty) said he had had this problem for years, and referred to it as snorkeling. Before he bent over to tie his shoe, he took a deep breath, just as you would before diving underwater.
30 pounds later, I have no problem breathing while I tie shoes. So I'll ask my fellow 50+ers, can you breathe while you tie (or snap, or velcro, etc) your shoes, or do you snorkel?