A.M. vs. P.M. Workouts

By Justine Kim
[Fitness]
Hit the Snooze Button - P.M. Workouts

Pros:
Some research shows that the optimal time to exercise is when your body temperature is at its highest, which for most people is from 4 p.m. to 5 p.m.  At this time, your muscles are warm and flexible, and muscle strength is at its greatest.  This results in the ability to work out longer and lift heavier weights.  These factors also make it less likely that you will get injured.

Many people say that their strength and endurance are greater in the afternoon.  The calories that you have consumed throughout the day are the fuel that will get you through an evening workout.  We are also more alert later on in the day.  Many people also prefer to work out later in the day so they will feel “tired out” by the time they hit the sack.  Some studies have shown improvements in sleep quality from evening exercise.

Cons:
There are an equal number of studies that say that evening workouts may actually disrupt sleep.  These researchers believe that the thermal effects of physical activity (increased body temperature) will keep you alert when you are trying to sleep.  A study published in the journal Sleep found that body temperature drops two hours prior to falling asleep.  The decrease in temperature is your body’s cue to relax and then ultimately fall asleep.  Working out too close to bedtime may disrupt your circadian clock and may affect your ability to fall asleep.

_____________________
time it right

Bottom line:  fit exercise in whenever you can.  Don’t use the time of day as an excuse to skip your workout.  Weigh your lifestyle and schedule to figure out when the best time is for you.  Whatever fits into your schedule most easily is going to be something that you can stick to long term.


Sources:
About.com
BlueSuitMom.com
Men's Total Fitness

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