Sometimes you need to look internally for enjoyment

I think the ephemerality of our body and mental states is how some can practice the same thing over and over and still find enjoyment each time.  Because even if you perform the same yoga poses everyday, it’s never the same.  

Attention and awareness of the subtle, ephemeral, differences in our individual-environment-task relationship is what helps bring one into a flow state.  

This transient goal of the mastery of our internal focus is much more rewarding than living in the future trying to attain some external physical goal.

Breathe like this to decrease stress

Cyclic sighing can immediately reduce stress

Take two maximal inhales, then slowly exhale.

Here's an article explaining the research behind it.

And here's a video with the person that co-led the study.