[preggoboygermany]

I startet inflating like 3 years ago. I started with a small hand pump, moved to a bike pump, and bought last week an aquarium pump. With the aquarium pump i get the best results. I prefer air, because for me it is easier to hold in. But try both and look, whats your favourite. To the risks... There is only one rule: When it starts to hurt, then STOP. At the first few times, it will hurt after a short time. But thats ok, because its all about the training. Sadly I have not much time to inflate and I can see it in the size of my inflated belly.

All I can say: Try it, respect the signs of your body when it is enough and keep doing it, and you will be a little bigger every time.