I've noticed a pattern on the mornings after I have a Monday night meeting, which is twice a month. As hard as I try to wind down after the meeting and get to bed, I rarely feel refreshed enough to push myself at the gym the next morning. I seriously considered taking today off from the gym, making it a "rest" day, but I decided to go ahead, knowing I'd be glad I did. I'm still tired, but I am glad I went.
I did the bike-run combo again this morning: 20 minutes (3.56 miles) on the recumbent bike, then 30 minutes (2.41 miles) on the treadmill with a 1-1.5% incline.
I continue to enjoy the book about the New York City Marathon.