On essaie le bloc, histoire de s’échauffer.

In everyday French, on very often replaces nous in spoken language.

So On essaie le bloc means We’re trying the boulder problem / Let’s try the boulder problem, not One tries the block in the usual English sense.

A few quick points:

• on is grammatically singular, so the verb stays in the il/elle/on form: on essaie
• but in meaning, it often refers to we
• this is extremely common in casual spoken French

So a learner should get used to:

• nous essayons = more formal/written
• on essaie = more natural in conversation

Essaie comes from essayer, meaning to try.

Here, on essaie le bloc means something like:

• we try the route/problem
• let’s give the boulder problem a try
• we’ll attempt the boulder problem

It sounds fairly natural and conversational.

Also, French often uses essayer + direct object where English might say:

• try the problem
• try out the route
• give it a go

Both spellings can exist with essayer in modern French conjugation.

For the present tense, forms like these are accepted:

• j’essaie / j’essaye
• tu essaies / tu essayes
• il/elle/on essaie / essaye

So On essaie is completely correct.

You may also see On essaye. That is not wrong.

In practice:

• essaie is very common
• essaye is also used
• learners should recognize both

Literally, bloc means block, but in context it often has a more specific meaning.

If this sentence is from a climbing context, le bloc most likely means:

• a boulder problem
• or a bouldering route

So On essaie le bloc would mean Let’s try the boulder problem.

Without that context, bloc could simply mean a block, mass, or chunk of something. But in sports/outdoor contexts, especially climbing, bloc often has this specialized meaning.

Le means the, so le bloc refers to a specific block/problem that both speaker and listener already know about.

So this is not just a block in general. It is more like:

• the block
• that boulder problem
• the one we’re looking at

French uses articles very regularly, often more than English does, so having le here is perfectly normal.

Histoire de is an idiomatic expression. Here it means something like:

• just to
• as a way to
• for the sake of
• to get...

So histoire de s’échauffer means:

• just to warm up
• to get warmed up
• as a way to warm up

It does not literally mean a story in this sentence, even though histoire by itself often means story or history.

This expression is common in informal French and often suggests a casual or practical reason for doing something.

Example:

• Je passe te voir, histoire de discuter un peu. = I’ll come by to see you, just to chat a bit.

Yes, you could, but the tone is a little different.

• pour s’échauffer = straightforward, neutral to warm up
• histoire de s’échauffer = more idiomatic, conversational, and slightly looser in tone, like just to warm up or to get warmed up

Compare:

• On essaie le bloc pour s’échauffer.
  = We’re trying the problem to warm up.

• On essaie le bloc, histoire de s’échauffer.
  = We’ll try the problem, just to warm up.

The second one sounds more natural and spoken.

S’échauffer is the reflexive form, meaning to warm up oneself / to get warmed up.

That is why it is used here: the people are warming themselves up.

• échauffer = to heat something / to warm something up
• s’échauffer = to warm up

So:

• J’échauffe mes mains = I warm up my hands
• Je m’échauffe = I warm up

In sports contexts, the reflexive form is very common because the subject is preparing their own body.

This is just elision, which is very common in French.

When de comes before a vowel sound, it often becomes d’:

• de + échauffer → d’échauffer
• but because the verb is reflexive, the full form is de s’échauffer

More exactly:

• se échauffer would be awkward
• French contracts it to s’échauffer

So histoire de s’échauffer is built from:

• histoire de
• se chauffer / s’échauffer → here s’échauffer

The apostrophe helps French flow more smoothly in pronunciation.

It is fairly informal and conversational.

That feeling comes from several things:

• on instead of nous
• histoire de as a casual idiomatic expression
• the overall short, spoken rhythm of the sentence

It sounds like something friends, teammates, or climbing partners might naturally say.

A more formal or neutral version might be:

• Nous essayons le bloc pour nous échauffer.

That is grammatically fine, but much less natural in everyday speech.

The sentence has a relaxed, spoken feel. It suggests a spontaneous decision with a practical goal.

Depending on context, natural English versions might be:

• Let’s try the boulder problem, just to warm up.
• We’ll try the problem to get warmed up.
• Let’s give this one a go, just to warm up.

So the French is not stiff or overly literal. It sounds casual, natural, and purposeful.