The Sphinx's Riddle, And Me

"What goes on four feet in the morning, two feet at noon, and three feet in the evening?"

Spoiler Alert: "Humans."

That's what I feel about me my days too. 

I start off on a slow pace in the morning, 
speed up to the max by noon, 
run all afternoon 
and retire by night, 
perhaps to write 
and summarize my day.