If a person experiences a severe muscle strain, what should not be done?

Applying excessive heat to a severe muscle strain can exacerbate the injury and lead to further damage. Heat can increase blood flow to the area, which may lead to swelling and inflammation, particularly in the initial stages following the injury. Typically, in the immediate aftermath of a strain, the best practice involves using ice, as it helps to reduce swelling and numb pain.

Stopping activity immediately is also appropriate in the case of a severe strain to prevent further injury, and gentle compression can help manage swelling while providing support to the injured area. Therefore, avoiding excessive heat is crucial to properly manage a severe muscle strain and facilitate recovery.