 He's like, I'm here for yoga. And I was like, oh, okay. So we start off with some breathing, what's called ujjayi breath, where you actually constrict your glottis and you make a hissing sound. And the idea is what it does is it gives your mind something to focus on, the sound, but it also constricts your windpipe. And so you start building heat in your body and it warms you up.