Stretching activates sensory receptors (such as muscle spindles and Golgi tendon organs {GTOs}) in muscles, tendons, and ligaments. These receptors then send a signal to the spinal cord.

So PNF stretching is potentially a more time-efficient way to improve flexibility, compared to, for example, static ...

“Muscle spindles, where macrophages are located, are tiny sensors inside your muscles that help your body monitor how stretched or tense your muscles are. These sensors play a crucial role in gu ...