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Re:Cardio fitness is a strong, consistent predictor of morbi... by s1artibartfast on Thursday May 02, 2024 @11:41PM (#40243804)
Not a source, but it tracks for me. Walk, jog, or run daily and you will have massive CV improvement from baseline in 3 months. people can and do go from being exhausted walking to their car to being capable running many miles in an incredibly short time.

The typical human body is very responsive when pushed.

Re:Cardio fitness is a strong, consistent predictor of morbi... by WalterBright on Friday May 03, 2024 @01:35AM (#40244421)
The heart, lungs, and muscles get strong fast. But the bones and tendons take more time. It's best to give them time so you don't wind up with shin splints, etc.