Apr 24, 2014 12:42 AM GMT
NYT: Exercise makes us tired. A new study helps to elucidate why and also suggests that while it is possible to push through fatigue to reach new levels of physical performance, it is not necessarily wise.
On the surface, exercise-related fatigue seems simple and easy to understand. We exert ourselves and, eventually, grow weary, with leaden, sore muscles, at which point most of us slow or stop exercising. Rarely, if ever, do we push on to the point of total physical collapse.
Better, he said, to attend to the messages from your muscles and calibrate training accordingly. Should your exercise goal be to become faster or stronger, find a pace or intensity that allows you to work out near and occasionally just beyond the boundary between fatigue and pain, a line that will differ for each of us and vary day to day.