Is it normal to be angry just for a second?

This is one of those times when i'm angry at someone. I'm not the kind who would & shout and throw things around but I lock myself in the room and don't talk to anyone. This actually helps me in expressing my anger alone but also makes me realize how stupid I was to burst out on such a silly issue. After doing this I apologize for my previous actions and also get apologies and makes me feel better. So, what do you'll think about this practice?