Body inflation

everytime i inflate, i end up getting very bad cramps, until i fully deflate. is that normal? can i improve upon this?

i start and stop. then start again. eventually the cramps win and i stop and definitely feel like i could keep going.

stretch and make sure to clean yourself out before starting, and what I do is I always start slow to let the first wave of pressure in the colon pass.

once you slowly open up you can up to the amount you usually do.

if water, use warm water(not too hot)
if using air manually, just do small pumps until you're comfortable. speed is key in general for anything, most cramps occur when you don't allow your body to adjust before pushing more in.