Arrive at the course early. Stretch. Hit some putts, and then some chips. Move to the driving range and hit some soft pitch shots, progressing into full swings. Finish with your driver and/or the club you plan to use on the first tee. Move back to the putting green, stretch, and practice your putting a little more. It’ll relax you for your first tee shot anyway.
But warm up properly. It’ll save you five strokes a round… probably on the first three holes.