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Old 06-14-2020, 12:20 AM
Mark in Idaho Mark in Idaho is offline
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Join Date: Feb 2009
Location: Somewhere near here
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Mark in Idaho Mark in Idaho is offline
Legendary
 
Join Date: Feb 2009
Location: Somewhere near here
Posts: 11,421
15 yr Member
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You subject your spine and head to more impact forces walking down stairs than you can experience in a car starting or stopping quickly. The most a car can achieve is 1.7 Gs. You can experience 3 Gs or much more just walking down stairs. The difference is you are prepared for walking down steps. In a car, you are rarely prepared. The driver is but the passengers are not. So, the passenger is startled by the movement. The startle causes muscle tightening and sometimes, an anxiety event.
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Mark in Idaho

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"Thanks for this!" says:
Dmom3005 (06-20-2020)