Yawning mid prayer

Assalamu alaikum everyone, i have a question about yawning in prayer.

Whenever i start praying, i always start to yawn during surah fatihah, idk why this happens so frequently. At first i didnt pay much attention to it, but it became so frequent like whenever i start to pray, I yawn while reciting surah fatihah.

Is this something to be concerned about or am I just overthinking?