Research has come a long way in this area, and it now shows us that women who stay active through pregnancy usually have better pregnancy outcomes. However, there are a couple of things to think about as you start the program.
First, if you have never exercised intensely before, pregnancy is probably not the time to start. In that case, you may want to wait until baby arrives to begin the exercise portion of the plan.
You can start all the rest right away. There aren’t many (if any in this plan), but you may want to avoid any ballistic, jumping movements during the first trimester of your pregnancy. Dr. Jade also wouldn’t suggest lots of running, pounding, or jostling of the abdominal organs. It’s a small risk, but it does exist. So you should know. In the third trimester, you should avoid doing lots of crunches or similar movements. Of course that is common sense, but worth mentioning.
With those caveats, this program is going to be very beneficial for most pregnant women. Of course, you should check with your physician and discuss the suitability of doing this program in your specific circumstance.