What happens to muscle tissue when it is heated?

When muscle tissue is heated, it increases in flexibility due to the effects of temperature on the muscle fibers and surrounding connective tissues. Heating muscles raises their temperature, which can enhance the extensibility of collagen fibers and reduce muscle stiffness. This is particularly beneficial in activities such as stretching or warming up before exercise, as the elevated temperature promotes a greater range of motion and helps prevent injuries.

The increase in flexibility is important in various athletic and therapeutic contexts, as it allows muscles to stretch more efficiently and respond better to dynamic movements. On a physiological level, the heat improves blood flow to the muscles, which enhances the delivery of oxygen and nutrients, potentially further aiding muscle function and performance.