It’s clear from the start that we cannot consider the period of three
hours after every main meal, because this interval must be allotted to
digestion only. Considerable physical effort is totally unadvisable in
this period (blood must not be directed to the muscles, since gastric
digestion has priority).
More exactly, people should train when their stomach is empty, but the
level of glycemia must be constant. Considering a normal awake – asleep
rhythm, there are two favorable moments when we can set fitness programs
and training in general: one in the morning, between 10-12, and the
other one in the afternoon, between 16-19.
Current practice in most of the sports confirms these periods as best for training.
Another argument for choosing one of these intervals for training is the
body temperature, which now gets to its maximum. The second period
(16-19) is even better than the first one from this point of view,
because the temperature is higher and this enhances sport performance.
It is not advisable to train very early in the morning, right after
waking up and before breakfast. However, there are authors who support
the idea of having the training in this period. The reserves of glycogen
are limited after the lack of food during sleeping and this is a reason
for using the adipose tissue earlier in training than in other cases.
Unfortunately, at the same time, the stress hormones (cortisone) are
secreted abundantly, so besides the adipose tissue, there is the risk of
losing precious muscular tissue.
Another argument against this is the fact that body temperature is very
low in the hours of morning, so no motion parameters (force, resistance,
speed, mobility, skill) can be fully activated. Thus, a prolonged and
tiring warming up would be necessary, hindering the actual training.
Everybody agrees that training before bedtime is not advisable at all,
because they delay sleep a few hours, given growth of cortical activity
and of body temperature.
This schedule can be adapted to any biorhythm and time zone and once
automatism installed, effectiveness of training will definitely
Copied with permission from: http://plrplr.com/17475/exercise-with-best-results/