German Phrase
Hüpf nicht beim Dehnen.
Meaning
A short, direct warning telling someone to avoid hopping or jumping while they are stretching. It is meant to prevent loss of balance or injury during a warm‑up or flexibility exercise.
When to use
Use this phrase in gyms, sports classes, yoga sessions, or any physical‑education setting when you want to remind participants to keep movements controlled while they stretch.
✦Grammar Breakdown
HüpfnichtbeimDehnen
Imperativ (Hüpf)
‘Hüpf’ is the singular informal imperative of the verb ‘hüpfen’ (to hop/jump). It is used for direct commands to ‘du’.
Negation with nicht
‘nicht’ follows the verb in an imperative sentence to negate the action: ‘Hüpf nicht’ = ‘Don’t jump’.
bei + dem → beim
‘beim’ is the contraction of the preposition ‘bei’ + dative article ‘dem’, meaning ‘while/at the time of’.
Nominalized verb (Dehnen)
‘Dehnen’ here is a nominalized infinitive used as a noun meaning ‘stretching’. In the dative case after ‘bei dem’, it stays unchanged.
🗨In Conversation
Hüpf nicht beim Dehnen, sonst könntest du dich verletzen.
Don't jump while stretching, otherwise you could hurt yourself.
Okay, ich halte mich lieber still.
Okay, I'll stay still.
✕Common Mistakes
Hüpfen nicht beim Dehnen.
The verb must be in imperative form ‘Hüpf’, not the infinitive ‘hüpfen’. Also ‘nicht’ follows the verb directly.
Hüpf nicht beim Dehnenes.
‘Dehnen’ is already a nominalized infinitive; adding ‘‑es’ creates an incorrect genitive form.
Hüpf nicht beim Dehnen, bitte.
While polite, the comma before ‘bitte’ is optional; placing ‘bitte’ at the beginning sounds more natural: ‘Bitte hüpfe nicht beim Dehnen.’
↔Alternatives
Spring nicht, während du dich dehnst.
Don't spring while you stretch.
Vermeide Sprünge beim Dehnen.
Avoid jumps while stretching.
Bitte nicht hüpfen beim Dehnen.
Please don't hop while stretching.
Cultural Tip
In German fitness instruction the imperative is common and often softened with ‘bitte’ or a friendly tone. However, in safety‑critical moments a blunt command like ‘Hüpf nicht beim Dehnen!’ is perfectly acceptable. Remember that German speakers usually separate the verb and ‘nicht’ in commands, unlike English where the negative particle often precedes the verb.