https://blogs.mercola.com:443/sites/vitalvotes/archive/2020/02/24/to-live-longer-get-up-and-get-moving.aspxWant to live longer? Try exercising smarter. It is not aging that causes a decline in fitness, but a decline in fitness that causes aging, according to Pocket. The story points out that instead of slowing down on physical fitness with middle age, youenCommunityServer 2008.5 SP1 (Debug Build: 31106.3070)https://blogs.mercola.com:443/sites/vitalvotes/archive/2020/02/24/to-live-longer-get-up-and-get-moving.aspx?ShowAllComments=True#9832462/25/2020 3:12:29 AM24451277-a5aa-4add-96dc-64081bfd86fa:983246Brian1<p>We have yet to discover how much exercise is needed to preserve motor units. The loss of motor neurons is one of the causes of sarcopenia, and they become more vulnerable around age 65. Muscles are important for insulin sensitivity and affects VO2 max.</p> <p>The question is whether we need to be active like a marathon runner to minimize sarcopenia, and whether HIIT protects them. Some endurance athletes are quite strong at over 100 years old. They didn&#39;t seem to have crossed the disability threhold.</p>