Random thought: are there certain clothes which make you more productive, confident, and focused?
I think so. For example, when I wear tighter fitting clothes, I actually feel more productive. Same goes with wearing all black clothing, it helps me focus on my thoughts and on my work.
If you think the opposite it is true. If you were lazy home clothes, you will feel lazy.
Also the best optimization you can make is having the lightest shoes possible. Why? The lighter your shoes, the more you can walk with less fatigue! Note — the gods as having winged and light feet!