1. Do not expect your teammates to become the "moms" of the team. Marcos Chamizo / BuzzFeed Don't ask them to order food, take notes or worry about whether or not there is coffee for everyone in a meeting if it is not their job. They are not the nannies of the team. 2. Do not invade their personal space. Marcos Chamizo / BuzzFeed Don't look into women's screens, or lean in too close to a colleague's desk. That's an invasion of public space. 3. Listen to them. Marcos Chamizo / BuzzFeed Don't interrupt a woman when she's speaking. Wait for her to finish, and then add what you want to say. 4. Never, NEVER say "you seem to be in a bad mood, is it your time of the month?" Marcos Chamizo / BuzzFeed It is annoying on any day of the month. 5. Do not dismiss their ideas. Marcos Chamizo / BuzzFeed Make it clear when the ideas and merit are of a woman, just as you would with any man. Don't take the thing they literally just said more seriously when a dude says that exact thing. 6. Don't spread rumours about your female co-workers. Marcos Chamizo / BuzzFeed Women face way more problems than men as professionals, and comments as simple as "I think she's getting married" or "she wants to have children?" can negatively affect their careers. Do not invent or share information about their personal life, however innocent it may seem. 7. Don't go ham with the air conditioning. Marcos Chamizo / BuzzFeed Stop keeping the AC on 16 degrees. 8. For the love of god, don't act surprised when you discover that the boss is a woman. Marcos Chamizo / BuzzFeed It's 2017, guys. 9. Pay attention and intervene if you think another man in the office is bothering or harassing your colleagues. Marcos Chamizo / BuzzFeed You might not be someone who's making a woman uncomfortable but if you see others doing it, and you don't speak up, you're part of the problem. 10. Teach yourself to give compliments and praise the work of women without adding superficial comments. Marcos Chamizo / BuzzFeed You do not need to reference anyone's physical features or their gender to say, "Hey, good job". 11. And, above all, support and defend your co-workers against sexism in any form. Marcos Chamizo / BuzzFeed Do not laugh or be neutral when someone makes sexist comments. Women don't need to be the subject of such comments or jokes, and especially if it's done behind their back. Don't just stand there, do something.