To improve the score of golf by promoting blood flow and making pulses calmed down.

Hornblende-cummingtonite porphyrite is sized from about the sizes of the small joints of the hands to the size of the head and is mainly composed of the ores which are produced from submarine volcanic eruptions and are collected from the bottom of the sea. The main elements thereof are oxygen, silicon, aluminum, sodium, potassium, magnesium, iron, etc. Rubber products containing the powder of the hornblende-cummingtonite porphyrite include a golf grip 1 shown in Figure 7, an insole 301 for golf shoes shown in Figure 11(c) and a strap 402 for regulating the size of a golf cap shown in Figure 14 and leather products containing the powder of the hornblende- cummingtonite porphyrite include golf gloves 101 shown in Figure 11(a), golf shoes 201 shown in Figure 11(b) and a handle segment 501 of a golf bag shown in Figure 15. Thermoplastic products containing the powder of the hornblende- cummingtonite porphyrite include a golf practicing mat 601 shown in Figure 16.