ハンガーノック

noun

hunger knock; bonk; hitting the wall

Sports term for sudden fatigue and energy loss caused by glycogen depletion during prolonged exercise. Common in cycling, marathon running, and endurance sports.

• レース中ちゅうにハンガーノックになって、足あしが動うごかなくなった。

  I hit the wall during the race and my legs stopped moving.

• ハンガーノックを防ふせぐために、こまめに補ほ給きゅう食しょくを取とることが大たい切せつだ。

  To prevent bonking, it's important to take in nutrition regularly.