The best investment you can make to loosen up tight muscles is a Foam Roller.
This is an incredible tool that you can buy for little money and will prevent many future injuries.
Tight muscles if not taken care of can lead to shin splints and eventually tendinitis or worse a stress fracture.
I know it from experience. That’s what happened to me last year. Not. Fun. At. All.
I got mine from decathlon here (I am not an affiliate):
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