Cold can slow down blood flow , cold therapy slows circulation , reducing inflammation,muscle spasm and pain.
Follow the RICE system after injury:
Rest: Take rest and avoid using the injured area.
Ice: Ice the injured area as soon as possible ,this helps reduce inflammation,bleeding and bruising right away.
Compress:Wrap with a bandage, often keep an elastic bandage in the first aid kits .
Elevate: Keep the injury above your heart to decrease swelling.