本健身球产品型号从直径55mm-20mm不等，健身球分为实心球和空心球，空心球并设有音板，一对球可发出高、低两音，是锻炼身体的必备之宝。

铁球:又称健身球，它通体圆滑，明光净亮，球体中空，内装音板和钢簧，握在手中运转，优美动听。百余年来，保定流伟着"保定有三宝，铁球面酱春不老"的民谣，铁球列为三宝之首。健身球（铁球）不仅是娱乐工具，而且有着群众观健身功能。球的外表明光铮亮，其内部结构复杂，球内有球，并装音板，两个为一付，俗称"一公一母"。拿在手中运转坊来，音响各异，有高有低，清脆悦耳，既能收到调筋理神之功效，还能在铁球的缠绵悦耳音响中陶冶性情。旧时官宦、商贾进京往返于保定余中，必购买此物，作馈赠亲友或达官显贵的见面礼。
　　 现在的保定铁球，是在沿袭了明清古老制作技术上，经过改进与革新研制而成的，工艺更加精细，结构更加科学。 实践证明，建身球不单是一种运动工具，而且具有调理精神，强壮筋骨的健身作有，对某些常见病，如血压、冠心病、神经衰弱、颈椎病、肩周炎、偏瘫后遗症、手指功能障碍等，均有一定的疗效。

THE SIMPLE RULES OF BOULES

BASIC PLAY

TEAMS   MADE UP OF ONE, TWO OR THREE OF FOUR PLAYERS

          EACH PLAYERS USES TWO OR THREE BOULES

TOSS A COIN TO DECIDE THE FIRST THROW.

THE TOSS WINNER DECIDES THE PLAYING AREA AND THROWS THE

COCHONNET(JACK)

PLAYING AREA CAN BE ANYWHERE, DRAW A

CIRCLE TO STAND IT TO THROW, AND THROW THE JACK

ABOUT 8 TO 10 METERS FROM THE THROWING CIRCLE.

THE FIRST TEAM THEN SENDS A PLAYER TO THE CIRCLE TO THROW

THE FIRST BOULE TRYING TO GET AS CLOSE TO THE JACK AS POSSIBLE

THE OPPOSING TEAM THEN ATTEMPTS TO THROW A BOULE CLOSER TO THE

JACK THAN THE FIRST THROWER.

THEY CONTINUE TO THROW UNTIL THEY DO SO (GET CLOSER)

OR UNTIL THEY RUN OUT OF BOULES

ONCE A LEAD IS ESTABLISHED BY EITHER SIDE, THE OTHER SIDE MUST THROW

UNTIL THEY REGAIN THE LEAD, OR RUN OUT OF BOULES.

DO NOT PLAY ALTERNATE THROWS.

ONCE ALL BOULES HAVE BEEN THROWN THE SCORE IS RE CORDED.

THE TEAM CLOSEST TO THE JACK WINS ONE POINT.

EXTRA POINTS ARE WON FOR ANY OTHER BOULES THAT THE WINNING TEAM

HAVE, WHICH ARE CLOSER TO THE JACK THAN THE OPPOSITION TEAM.

THE WINNER THEM DRAWS A CIRCLE AROUND THE JACK AND STARTS A NEW

END.

THE GAME CONTINUES UNTIL ONE SIDE SCORES 13 POINTS.

A MATCH CONSISTS OF THREE GAMES.

 WARNING: NOT FOR CHILDREN UNDER 3 YEARS.

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