hit a wall
SMART Vocabulary: related words and phrases Tired and making tired
all in
anti-fatigue
at your worstidiom
be dead on your feetidiom
be fit/ready to dropidiom
finish something off
fit to dropidiom
fragile
frazzled
gassed
haggard
knackered
shell-shocked
sleep-deprived
sleepily
sleepiness
sleepy
stonkered
strung out
zonked
hit the wall
idiom
to reach a point when you are running, exercising, playing sports, etc. where you are so physically tired you feel you cannot continue: （奔跑、运动、比赛期间疲倦到无法继续）遭遇极点
Many marathon runners hit the wall at around 20 miles.许多跑马拉松的人在20英里左右会遭遇极点。