Overstretching or tearing of muscle fibers or tendons, often from heavy lifting or sudden sprinting.
Step-by-Step Guidance
Stop the activity that caused the strain. Avoid stretching the muscle, as this tears fibers further.

Apply cold pack wrapped in a towel for 15-20 minutes to constrict damaged capillaries.

For leg or arm strains, wrap with an elastic bandage to minimize local muscle spasms and swelling.

Elevate the injured limb to decrease pooling. For back strains, rest in a neutral position with knees bent.

After 48 hours, switch from ice to mild heat to increase blood circulation and promote healing.

2 - 8 weeks
Timeline is typical for uncomplicated healing. Always follow doctor guidance.