The national guidelines from several leading health organizations emphasize the need to perform 30 minutes of moderate-intensity exercise per day, or 150
minutes per ШУУД ҮЗЭХ week. This
is based on strong evidence from numerous studies. There has always been flexibility in these guidelines, recognizing that short bouts of higher-intensity exercise are also effective for health and fitness, such as jogging 75 minutes per week instead of walking [twice that]. This new report also suggests that short amounts of daily exercise may be beneficial, particularly for preventing heart disease. Although this is consistent with existing guidelines, keep in mind that this was not a randomized trial: It focused only on jogging and running, and we do not know what other types of activities the individuals did at the time of the survey or long term. Yet compared with people who reported no activity, even these short bouts of exercise seemed to reap benefits.
If someone has established a daily routine that includes 30 minutes of
walking, I recommend continuing that routine [rather than substituting
the walk with 10 minutes of jogging]. However, if someone cannot put in
the time on a particular day, then a short bout of more intense exercise
would be OK. It should be emphasized that when someone exercises for
less time, the guidelines say that the exercise should be more vigorous.
One cannot just cut back on walking time, but must increase the pace if
the workout is to promote benefits.
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