Fasting During Workouts for Improved Performance

This is another seemingly unbelievable benefit to intermittent fasting: improved physical performance with exercise while fasting. Last week, I ran 2 full miles while 12+ hours into a fast. I outperformed my last fasted run by double and with a faster pace. In the prior month, I had been running after breaking the fast and I was unable to run more than 1/4 mile without walking.

What I’m noticing with working out while fasting: I have more energy, strength, endurance, with less muscle soreness and fatigue afterwards! I can perform more reps with less fatigue and when I run up a flight of steps, I now feel like I’m just getting warmed up instead of feeling myself slowing down near the top.

Another unexpected side effect: I look forward to working out! In fact, going too many days between work outs makes me want to work out more! 

Apparently there are several physiological factors that support improved endurance and strength when exercising while fasting. One of which is the production of more human growth hormone, which supports my experience of improved physical performance while fasting.  I can see the benefits of fasting now compared to non-fasted training. I’ve more than quadrupled my running distance in one week with just 2 sessions. (Currently, my running has been limited by my time availability and not by my endurance: cardiovascular nor muscular.)

Again, even though I’ve read the research, I would not have believed these results had I not lived them myself. I would encourage you to check with your physician prior to attempting this.

May we each find pathways to greater health today and the coming year. Go forth and be healthy!

P.S. After writing this post, I did a non-fasted run at the same pace as my last 2-mile fasted run. Had to start walking after 0.8 miles and “walked it off” for another 1/2 mile. Decided on this day that I’d be sure to do most running while fasting vs not! There was such a difference both in how I felt and performed …

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