"Running
 becomes…well…a tiring affair, just like sitting or standing for long 
periods of time. When we tire we lose focus. And when we lose focus we 
slump. As our parents used to tell us, sitting or standing up straight 
does make a difference. 
So what is that difference exactly? When we are upright, our shoulders
 more easily sit in their proper “shelf” without any excess effort. When
 the shoulders are in their proper place, the elbows more easily swing 
forwards and backwards for a taller, less twisty run posture and faster 
run times. Easy. 
But when we slump, our shoulders dump forwards and our 
elbow trajectory shifts side to side. This side-to-side motion forces us
 to battle that excess rotation we previously discussed, and spend way 
more energy than we would have to just to run slower. Not good if we 
want a faster marathon. 
The good news: we can train uprightness and
 shoulder position, once again, with our pushup. When executed with the 
proper intention, the pushup develops the positional strength and 
endurance to stabilize the upper back for longer periods of time. By 
screwing our hands into the ground and keeping our elbows by our rib 
cage, we can train shoulder stability and resist the internal rotation 
and flared elbows that happens with fatigue. So here’s the test. Can you
 do 15 butt-squeezed full range of motion pushups? Good. Now can you do 
them with elbows in and hold for 3 seconds? Better. 
So go ahead. Check 
your posture, test your pushups, and watch your arm swing. You’ll be 
surprised by the change you can make."
4 hours ago
 


 
 








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