While pregnancy is a wonderful time for an expecting family, it can also be very challenging physically for the mom-to-be. The growing baby (with his/her weight), hormonal swings, impaired thermoregulatory ability (sweating) and altered metabolism can all work together to make climbing a flight of stairs difficult, let alone working out five days a week. By the end of nine months, you will have a happy baby, but potentially a deconditioned body as well.  While the best defens