I try to walk them slowly off. Usually I end up taking flexeral, a misspelled muscle relaxant..
You can break them up with a massage gun, foam rolling works, lacrosse/tennis ball leaning against the wall to apply pressure, and a professional massage.
https://youtu.be/DzSU2FiFKTM?feature=shared
https://youtu.be/xw3j1OANkjQ?feature=shared