Running is always fun and usually good for
health. However, from a scientific stand of point, choosing the suitable
running time is significant for this activity.
The best time of day to run is a
long-standing debate among runners and it is not a easy task to answer this
question. Actually, the best choice of running time depends on different people
because each one's situation is different. Generally speaking, late afternoon,
which is between 4 and 7 p.m, is better than early in the morning because the viscosity
of carbon dioxide in the morning is larger than that in dusk. In addition, in
the morning, the dirt in the air is also bad for runners' health. Furthermore, the
blood pressure is higher compared with that in the evening so it is important
to try to avoid running in the morning, especially for those with a high blood
pressure.
Another reason to choose running at dusk is
that metabolism effect of human body is strongest in the afternoon and early
evening. So running during this time is best for exercise of the body. However,
if the aim of exercise is merely losing weight, the best time of running might
be morning before breakfast. It is because in the morning the blood sugar level
is the lowest in a day. When blood sugar level is low, the body would first
turn to the sugar stored in the liver and then turn to burn fat instead quickly
as the primary energy source. So exercise before breakfast would help burn fat
more easily and efficiently at this point of time. And there is a potential
benefit of running in the morning. Scientific study shows that running exercise
in the morning correlates with better sleep. Running in the morning can result
in better sleep quality that running the evening.
Still, there are a large amount of runners
choose to run late in the evening, which is not usually considered as a good
exercise time, as this time works best with their personal schedules. And their
health still benefit from the running exercise. Anyway, some running, whenever
it takes place, is better than no running at all. It is prominent to find
running time that best works with individual's personal schedule so runners can
take advantage of his/her time, no matter what time of day he/she runs, so the
runner would get all the benefits of running. It is also important to establish
a routine of running so the human body can get used to running at a specific time.
And the runner can accustomed to the routine of wake up, drink, eat, which also
help lead to a healthier life.
Source:
http://www.runnersworld.com/race-training/morning-noon-or-night?page=single
http://running.about.com/od/motivation/f/Whats-The-Best-Time-Of-Day-To-Run.htm
http://www.alajoo.com/questions/when-is-the-best-time-to-start-running-in-the-morning/