bonk
v.β Β«This is because such exercise will quickly deplete the bodyβs reserves, causing severe fatigue (in running this is called hitting the wall, in cycling itβs known as the bonk, which is the sound you make when you hit the wall).Β» ββCyclistβs Challenge: Turning 100″ by James McNamara Washingon Post Aug. 15, 1986. (source: Double-Tongued Dictionary)