He thinks about it for a moment, and then shakes his head.

"No way... when I did it before, it was so exhausting... this time I didn't even notice it was different!" He blushes a little, rubbing his hair. "I didn't think I did that anymore!"

It's been something he's been wondering about for a while, and finding out it just happened without him realizing it... well, that's how normal growth works most of the time, doesn't it?