Can a skinny man lead a group of people?

Yes why not ?     

Yes??                   

Education and preparation has nothing to do with brain and attitude. I'm 4:11 and taught 8 grade with no problem. It is how you look but how you portrait yourself. Of course you can lead a group of people, students, community, college graduates and so on. Be confident and show them why you are there. 

Yes, I don't really understand the question. If there evidence that all teachers and engineer leaders/managers are fat?

Less than half of adult Americans are even considered overweight and that is a country that is considered "fat".

Most leaders in the business world are not fat in my personal experience. Look at CEOs of major companies and most are well fit and promote health of mind and body. In our area most teachers are also not overweight.

I see absolutely no reason why they couldn’t at all that’s my opinion 

@Tavy

Let's talk about the present. In the past, due to lack of food so many people were skinny, even the people around Ghandi had almost the same weight as him so it was normal. It's totally different these days, not all people are skinny. Some are skinny since born. 

Google Ghandi, this skinny man led a Nation.