a stress fracture feels like an aching or burning localized pain somewhere along the bone, if the stress fracture is along a bone that has a lot of muscles around it, like the tibia or femur, these muscles will feel very tight.
The sliding filament theory is the explanation for how muscles contract to produce force. As we have mentioned on previous pages, the actin and myosin filaments within the sarcomeres of muscle fibres bind to create cross-bridges and slide past one another, creating a contraction.
Notify the supervisor of said coworker, and I would speak to that person to get a deeper understanding and hopefully tell them that it is not proper for us to act in such a manner.
