Boy or girl prediction?

We finally got to see our beautiful baby! It’s our first so we are so excited. We did an 8 weeks transvaginal ultrasound and we got to hear the heartbeat and all. The heartbeat was 160. I’m curious from the other posts. How are you guessing If it is a boy or girl? I’m seeing all of the theories so I’m curious. Would you say boy or girl? If you guess a certain way can you tell me why? I’m so curious!