Here is an fascinating video which illustrates what happens when we stop moving, from injury or just lack of activity, even sleeping!
Please first listen to below audio introduction (turn your volume up) from Curtis Cramblett, PT, CFMT, CSCS, Level II Cycling Coach, then click the link to the video. Important to learn more about this "loose connective tissue and fascia" before watching. The video includes a Cadaver, a person that passed away & donated their body to science.
Ready to watch Gil Hedley's,
"Fascia and stretching: