Running 7 Marathons In 7 Days

Running 7 Marathons In 7 Days A marathon is 42.195 kilometers or 26 miles, 385 yards of running. That would be more than enough for most active adults, but there's always going to be that hard-driving competitor who's ready for more. A study published in the Journal of Strength and Conditioning Research tracked the effects of competing in marathon-length events every day for a week.

Eight experienced runners completed one marathon per day for seven consecutive days. The fastest finish for the total of all seven marathons was 23 hours, 25 minutes and 42 second. The slowest cumulative time was 34 hours, 25 minutes and 21 seconds. Although there were minor increases in markers of muscle and liver cell damage, blood fat profiles improved and body fat was lost at about the same rate that muscle mass was gained, resulting in no change in body weight.

True Strength Moment: If you've conditioned yourself to be able to complete an ultra-endurance challenge like this, and you keep pace with your caloric needs and hydration, this research suggests there may be no adverse effects. In fact, some cardiovascular risk factors may actually improve.
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