There is a lot of debate about warming up and cooling down. Understanding the
importance of warm up and cool down routines are vital to your success in
track or any other sport. If you can improve sprinting, whether it's better
warmups, better cooldowns, speed and agility workouts or just better sprinting
mechanics, then you'll win more.
In track, when we finish a sprint, the coach is always at the finish line to
tell us, "walk it off, walk it off!" The coach also made us do all those warm
up routines. Let's discuss why this is so important.
Many parts of the body work better with a proper warmups and cooldowns. The body
recovers much faster from exercise if we do a proper cool down. I like to explain
the circulatory system because the reasons are the most obvious.

The circulatory system includes the heart, veins and arteries. The goal is to carry
oxygen and fuel to all the parts of the body, then remove the remaining waste and
dispose of it.
During a sprint, circulation can be a daunting task. In fact, the heart is simply not
capable of handling this amount of blood flow by itself. Good thing the human body is
so amazing. This explanation should help you understand why, but more importantly, to
make sense of the need for the warm up cool down process.
The veins and arteries are much like a soft garden hose (smaller of course). If you
put blood into a hose, it just sits there. It needs a way to move through the hose in
order to perform any useful function.

If we squeeze the hose, the blood moves away from the squeeze point. When we release,
and the hose expands back, the blood returns to the squeeze point. This moves things,
but not with any direction or real purpose.
The entire circulatory system includes valves, like in the heart. These valves are one-way
valves. They’re kind of like a flap that opens one way, but closes if you try to go
the other way.

Notice with valves, when we squeeze the hose, the blood flows OUT only one
direction. When we release the hose, blood flows IN from the other direction. Using
squeeze and release together provides a consistent flow in one direction. It works
quite efficiently.
If the heart isn't capable of pumping sufficient blood for sprinting, how do we
sprint? This task is performed by parts needing blood flow the most, the
muscles.
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Muscle Activity Helps the Heart Supply Blood to the Muscles
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The heart has chambers with valves, but it's also a muscle. Arteries and veins have
valves but no muscles of their own. When the muscles are working, they squeeze these
little hoses and make the blood flow. Those valves are also the reason our blood
doesn't just sink to our feet, leaving our brain bloodless.
Warm Up Cool Down
Sprinting uses our resources faster than we can get them there. The example above
pertains to both the importance of warm up and cool down exercises. The muscle
isn't fully fed for a sprint until you start sprinting. You sprint faster if the
fuel is in position, ready to be used.
We can't sprint all day like some people can jog. Our body is running at a deficit of
oxygen. When you are done sprinting, the muscles are still screaming for fuel. This is
why the coach hangs out at the finish line and encourages us to walk-it-off! Your
muscles can continue to push blood to your muscles if we "walk-it-off."
Warm up cool down routines should always be part of your track and field workouts.
Warmups should get us breathing hard and sweating a little. Cool downs should continue
until we stop breathing hard. The result is, we feel better, with fewer injuries,
faster recovery, and improve sprinting performance too!