Ask HN: What are your productivity hacks?

I've been trying to be more productive by taking small, concrete steps. What systems have you set up for yourself?

Here's what I have.

1. Whiteboard tasks for the week, w. daily assignments

2. Check emails once an hour

3. Set default page in FF as a blank page(as opposed to Gmail, Reader, etc.)

4. Tea, not coffee. Cup of water on hand at all times.

5. 7 pull ups each time I use the bathroom.

Equipment-wise, multiple screens tend to help. A good chair too.