I'm sorry to break this news but you're probably in for quite a bit of pain over the next few months, as the girls grow you will find yourself squeezing through gaps that would have let you through with ease a year ago, now however you will be making regular contact with doorposts, doors etc & it really hurts, whilst they're growing you'll notice that a bang in the chest can easily hurt more than a swift kick between the legs.
If you're (un)fortunate enough to own a big clumsy dog then you'll probably be floored by him/her on a regular basis, my dog manages to whack my girls at least once a day.
It's taken a year for me to learn to take more care & allow more room going through tight spaces, either i'm a bit slow on the uptake or I enjoy pain.