It seems athletic performance is better later in the day.
“In the afternoon and evening,” Dr. Smolensky said, “you are in a different biological state.”
http://www.nytimes.com/2009/12/10/health/nutrition/10best.html
One recent study, by the late Thomas Reilly and his colleagues at the Research Institute for Sport and Exercise Sciences at Liverpool John Moores University in England, found that people’s maximum heart rates and sub-maximal heart rates were lower in the morning but that their perception of how hard they were working was the same in the morning as it was later in the day.
Dr. Reilly and his colleague Jim Waterhouse, in a review published this year, also noted that athletes’ best performances, including world records, were typically set in the late afternoon or early evening.




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I have always workout in the morning because of other commitments. Morning workouts are a great way to start the day. I will try to add evening workouts to my workout routine. Thanks for the info.
This doesnt really surprise me that much -Ive always noticed that weight training is easier in the afternoon/evening