When the weather is nice and warm, it is necessary to adjust your clothing during that time.
One of those ways is to roll up your shirt sleeves. Rolled up sleeves of shirts are often the best solution for this, but it is necessary to respect certain rules. You do not want to look messy or overly casual.
It is completely normal to roll up the sleeves while you wash your hands, lift an object or work in a space that is not clean and is full of dust.
In the moments when the weather outside is too hot, rolled up sleeves will help you have more air flow.
Rolled up sleeves give a look that says you are relaxed guy. For example, in situations when you leave the office and go to a less formal event in a relaxed atmosphere.