One of the things I enjoy the most about yoga is the focus on breathing. For someone who has trouble breathing during allergy season (which is just around the corner!), spending the time to focus and filling the body with full breaths is a very inviting activity.
The second best thing about yoga is Savasana, aka the corpse pose. While it might sound like something you'd want to avoid, I really have to disagree. It is so incredibly relaxing after a yoga session that I usually have to fight just to stay awake.

The third best thing about yoga is discovering what your body is truly capable (or sadly not capable) of. Tonight I did my first shoulder stand. Did you know it's hard to balance on your shoulders? The other day my friend Eileen was showing me the crane. I fell flat on my face in front of a small crowd trying out this new pose. When all else fails, I can always go back to the corpse pose!
And no, I can't do this yet...