I enjoy a workout in the morning as it sets me up for the rest of the day, others find working out in the afternoon or evening fits in with their routine.
Surprisingly in a study at the Clinical Research Centre of the University of Chicago, scientists believe that those who go to the gym or exercise after work or in the evening are more likely to have a higher level of fitness than those who exercise in the morning.
I personally believe it is more important to try to fit some moderate to vigorous exercise or activity into your day regardless of what part of the day it is. Also the intensity of that exercise is key.
Read more: http://www.dailymail.co.uk/health/article-55222/Why-evening-best-time-exercise.html#ixzz1ktNDcj2b