tensing up

UK
/ˈtɛnsɪŋ ʌp/
US
/ˈtɛn.sɪŋ ʌp/

Library

The science of stage fright (and how to overcome it) - Mikael Cho
Your neck and back tense up, you slouch.
physiology
se crisper
« Se crisper » décrit le fait que les muscles ou les parties du corps deviennent tendus à cause du stress.
The science of stage fright (and how to overcome it) - Mikael Cho
Your neck and back tense up, you slouch.
medicine
se crisper
Devenir physiquement tendu, souvent à cause du stress ou de la peur.
Secrets of the Snake Altar (Full Episode) | Lost Treasures of the Maya | National Geographic
Everything is starting to tense up, both my nerves as well as the ropes.
general
commencer à se crisper
commencer à se tendre
Commencer à devenir tendu physiquement ou émotionnellement.