Odd that you should bring this up, as I have been thinking a lot lately about this same problem. I'm no skinny-minnie and probably take up more space than I think I do. However, I was taught early on to keep to the right when walking in a kitchen (same as road traffic), keep my carcass close to the counter (don't stand in the middle) keep my feet under me, and be aware of who's around you and where they are (so you don't back into them). This seems to be a lost thing training wise, but extremely important for keeping things running smooth. If you don't keep to the right, you will do the "dance" where no one knows which side the other one is taking. My big deal now is people standing with their hands on their hips. I had a manager who, when I was 16 at my first job, physically grabbed my arms firmly and put them down by my sides. I had a surprised/shocked look on my face and he said "This is a small kitchen. Putting your arms like that makes you three times bigger than you are. I have to walk three times as far to get around you." I never forgot it. When I try to break newbies of that habit, I always tell them that story. I worked with a 70+ year old lady at a recent job that probably weighed 90 lbs. She would stand with her hands on her hips, and also had an uncanny way of knowing where I was going and getting in front of me right before I got there. At the end of a shift my knees would ache from stopping short and turning to avoid her. My problem now is my line cooks are taller than me, and it seems like their elbows are always trying to poke my eyes out. I sympathiize with your problem. I have worked with people bigger than the one you are talking about with no problems, and I've been around skinny people who take up the whole kitchen. Tripped on people's feet who were leaning against a counter who didn't have sense to move until I tripped on them 3 times and started giving them dirty looks (duh, put your feet under you). Size in a kitchen, especially a small one can be a big deal, but I think it's more of a question of being aware and alert to what's going on around you. The person should be alert and move in anticipation of where you are going, but again, no one thinks about that any more.