I am a beer enthusiast
金玉はとっても凄い設計なんだぞ。無駄に。
カウンター熱交換システムを搭載している。


具体的には、金玉へいく血管と、金玉から帰ってくる血管が螺旋で絡みついている。
これにより、金玉へいく血は、金玉から帰ってくる血と熱交換をし、体温より下がる。
逆に体内に入っていく血は、金玉へ行く血より熱を奪い、体内温度に近い温度になる。

      37℃           35℃ 金玉へ→
======================================
          ↓熱↓熱↓
======================================
←体内へ 36℃          34℃

さらに凄いのが玉袋。この玉袋は寒冷時には体の方に収縮して冷えすぎないようにし
暑い時には伸びて体から遠ざけ、表面積を増やし熱を発散する。


正に金玉は実は無駄に凄い設計なのだ!

 ヽ(‘A`)ノ
  (  )
  /ω\
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