This is a great read about endurance activity and increased heart metabolism.
One of the key points is that the research was done with heart rates at 65-75% of capacity. Since maintenance pace keeps you in the 65-80% MHR range this study is highly applicable to running. The fact that these stimuli seem to return the heart to a metabolic state of youth could be paramount in heart disease prevention and overall cardiac throughput.
In theory our threshold/10K/VO2 work could stimulate an even greater cardiac metabolism since we operate closer to 85-95% of MHR.
If you’re in anywhere between 30-90 years old, this is a great read.


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throughout. Look up what electrolyte fluid and gels the event will provide. It is very common in half marathon and marathon distances to offer gels on the course, but you want to know the brand, flavor, and if they contain caffeine. Then you will practice with those fluids and gels leading into the race to confirm they work for you. If they do not, you will need to carry your own. In training and racing, take gels every 35-45 minutes. Get the gel in right before a water station, and then drink water to wash it down (do not take electrolyte fluid with a gel). In between, you can take water and electrolyte fluid to stay well hydrated. If you are racing less than an 60 minutes, you will need nothing, or only water to get through the distance.


