FOR RUNNERS, THE BENEFITS OF UPPER BODY STRENGTH
Naturally, having strong leg muscles is essential for running quickly, but many runners disregard the value of upper body strength for effective running:
Your back and abdominal muscles are crucial for stabilising your upper body. Your forward propulsion will be reduced as a result of compensating motions caused by a weak core.
To ensure an effective flow of energy from your body to your legs, you must have a strong upper body. Without it, the right arm technique cannot support your legs as well as it should. You can run more quickly and with less energy use if you use an effective running form.
Another advantage is that strong stomach and back muscles can cushion the impact of running on your spine. So, reducing the risk of injury requires a strong core
HOW TO HOLD YOUR ARMS CORRECTLY WHILE RUNNING
elbow bends that are 90 degrees or less
Swing your arms lightly in the direction you're running in (your arms should not cross the centerline)
Maintain relaxed grip with your palms facing in. Your thumb and index finger need to be gently in contact.
Instead of dragging your elbows forward, concentrate on pushing them back.
Your running form is effective because to the right arm technique. However, until you develop your upper body, you cannot run with the best form (especially your core muscles).
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