Consistency is the most important characteristic of an effective training regimen. So if you don’t always have time for what you consider a “full workout” every day, then at least try to do more than nothing every day. Many runners mistakenly believe that a 20-minute workout is not worth the bother, but it is, especially if you crank up the intensity or use the time to work on an otherwise neglected aspect of your fitness (technique, strength, etc.).
Save the big workouts for weekends or other days when you have less clock pressure, and on the other days, just do something.
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