We're born with pretty flexible tendons and joints - as anyone who's seen a baby happily nibbling on their toes can testify. But a few years down the line, most of us have already lost an amount of flexibility simply because we're not using our full range of motion. "We start losing flexibility as soon as we go to school and start sitting down more," explains physiotherapist Nell Mead. "If you don't use the filaments (stretchy material within your muscle) then they become shorter."
This is a companion discussion topic for the original article at https://patient.info/news-and-features/how-to-become-more-flexible