All these things make intuitive sense to me, and I practice almost all of them. Without citations to actual scientific articles, however, this is just another productivity post.
There is a list of sources at the very bottom of the provided infographic. I haven't actually gone through them though.
I agree with this list. Not multitasking is hard in the connected world and I type this HN comment during work. LOL. But my team does support and development so context switching can kill us some days.
I will keep that in mind the next time I feel like working 20 hours per day.