Funny. I wasn't clear enough, so let me explain:
When I begin the leadership position I am in, I didn't take a lunch break for the entire first year (which ended up giving me anxiety/burnout/depression). I didn't think I was worthy of a break, and that I needed to put in the OT to get my bearings. My staff observed me doing this, and it began to rub off on them- people didn't take their full 30-minute breaks and they often continued to work at the desk while they ate. This leads to burnout, less productivity, and higher chance of errors.
Leading by example is my point... no one will take your recommendation to go outside for a 5-10 minute walk because they think it's crazy. Until they see their boss schedule it daily and realize it's ok. I have to verbally remind certain people to take a break when I see them work 0730-1400. Some people are hard workers... and they won't stop until they see their boss stop.
I go out of my way to not disrupt people on their break and ask them work questions.... it can wait until they're done. I don't always succeed at this one though. Actively working on it.