The key point is at 4:42.
You can hear every swallow ???
I like this summary
Watch first chapter FREE:
Watch first chapter FREE: https://www.medbridgeeducation.com/courses/details/the-aging-brain-mild-cognitive-impairment-and-dementia
Read related article: Biological Clock 101: The Neuroendocrine Theory of Aging, Jennifer Bottomley, PT, MS, PhD - http://www.medbridgeeducation.com/blog/?p=3521
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Video on the physical
Video on the physical changes that occurs during the aging process