There is science that validates both working out in the morning and the afternoon. Due to the increase in heart rate and body temperature it appears unwise to engage in heavy work out sessions late in the evening before going to bed as it could negatively affect sleep.
The most important factor in your exercise regime is being consistent and maintaining a daily/weekly routine.
Many people believe that working out in the morning is the best idea. There are studies to suggest that you can burn almost 20% more body fat if you hit the gym on an empty stomach. There’s also the endorphin rush and getting a goal achieved early to the day. You may be more active and health conscious throughout my day, making better choices if you’ve have had your work out.
Some studies suggest that the afternoon may well be an optimum time for physical activity. Body temperature is at its peak, heart rate and blood pressure are at their lowest in the afternoon, and these provide for enhanced work-outs, better reaction time, possibly less warm up time and lower chance of injury.
So, the key is fitting some exercise in your day that fits into the schedule and keeping with it. Exercise is the best antioxidant!!