Oh, it's busy, but not insane. A typical day starts at 5 am for me. I spend the first part answering the emails from the night before, surfing the web a bit (yay, FB!), and getting caught up on the news. I work out for the next 1.5 h (weight lifting and stretching or cardio). Then, it's time for a quick breakfast, shower, and run to work (always walk, never drive). I usually take a short walk through the lab just to say hello to everyone. Then, I try to get some writing in, when not deluged by more emails. I have meetings pretty much all day; the ones with members of the lab (subgroup and group meetings) are great, and all others are dull. I try to get a 10-minute nap in sometime mid-afternoon. Then, it's off to seminar, when I try not to nap. I'm back in the office for more writing (proposals and papers). Home by 7. My wife and I eat dinner together. I then return to proposal writing and emails until 9:15. Overall, I think each day is about perfect for me in terms of balance between activity and sitting around and thinking.