Just don't do what I did...I was making pizza for guests, and realized too late that my yeast was out-dated, sooooo...I used two packets instead of one.
I put the pizza in the oven, and we had a few beers. When I looked in the oven to check on it, it was at least 6 inches tall. I opened the oven, poked a few holes to let some air out and mashed it down with my spatula, and had another beer. When I looked again, it had risen even further. We did everything but stomp on it, but the danged thing wouldn't go down, and wouldn't get done in the middle, so we ended up eating the toppings and throwing out the crust.
We get by with a little help from our friends