The first few calls of a calling block are usually the worst. Your voice is cold, the opener comes out stiff, and a gatekeeper catches you off guard. By call five you have found your rhythm, but by then a handful of prospects have already heard the clumsy version of you.
A warm-up fixes that. Athletes do not start a match cold, and a rep who spends the next two hours on the phone should not either. This guide gives you a five-minute routine, the reasoning behind each drill, and ways to run it alone or with a partner.
Why warm up at all
Phone work is a physical skill as much as a mental one. You are speaking clearly, at a steady pace, while thinking about what the other person just said. The first minutes of any spoken session tend to feel slower and less fluent than the tenth.
A warm-up does three things. It loosens your voice, so you sound like yourself rather than like someone reading. It puts your opener in your mouth, so it is not being said aloud for the first time on a live prospect. And it rehearses the moments that tend to trip you up, such as a blocking gatekeeper or an unexpected "What is this about?".
You do not need long. Five minutes before the block is enough to notice the difference. If you only have two, drop to drills 1 and 2.
The five-minute routine
Drill 1: Voice and breath (1 minute)
Stand up if you can. Take a slow breath in, and let it out while counting to six. Do this three times. Then read a sentence from any page aloud, slightly slower than you would normally speak, and finish each sentence with a falling tone rather than a rising one.
Why it works: standing opens your chest, and a slower pace is easier to keep steady once the call starts. Rushing is the most common sign of nerves, and it starts in the first sentence.
Drill 2: The opener, three times (1 minute)
Say your opener aloud three times, changing it a little each time. Change the emphasis, the order of two phrases or the first word. The point is to loosen the wording so you can adapt, not to memorise a script. If you do not yet have an opener you like, the guide on B2B cold call opening lines has patterns to start from, and the 30-second phone pitch covers a longer version.
Check three things: did you say who you are in plain words, did you give a reason that is specific to the person, and did you end on a question?
Drill 3: The gatekeeper line (1 minute)
Say the line you will use if someone other than the prospect picks up. For example: "Hi, it's Sam from Northgate. Could you point me to whoever looks after warehouse staffing?" Then say your reply to "What is it regarding?" Keep it calm and short, and do not hide the reason or over-explain it. More on this in how to get past the gatekeeper on a cold call.
Drill 4: Voicemail in 20 seconds (1 minute)
Leave a pretend voicemail to an empty room. Aim for your name, company, one reason, and a clear way to reach you, said slowly. Most reps rush voicemails and swallow their phone number. Say the number as if the listener is writing it down. There is more in cold-call voicemail scripts.
Drill 5: One hard moment (1 minute)
Pick one difficult reply and say your answer aloud. Choose a different one each day: "Not interested", "Send me an email", "I'm busy right now", "We already have a provider". If you rotate through them, the whole set is covered in a week. Useful starting points are responding to "not interested" and the existing supplier objection.
Running the routine with another person
A partner makes the drills more realistic, because they can interrupt. Two reps can swap roles in the same five minutes: one plays a busy manager who says "I've got ten seconds", the other opens the call, then you swap. Keep the feedback to a single sentence each, such as "You started with the company, not me." Anything longer belongs in a coaching session, not a warm-up.
If you are a manager, a shared warm-up before the block also lifts the mood on the floor. It takes five minutes and nobody needs to prepare anything. For a longer practice rhythm, see running weekly call practice sessions.
Running it with DIRI AI
If there is nobody to practise with before the block, you can warm up against an AI customer. In DIRI AI you speak by voice with an AI playing the customer in a prepared scenario, for example a busy manager who picks up on the second ring. After the call you get a report on how it went, so you can see what to adjust before the real dials start.
The Free plan is a good match for this routine: it costs nothing, needs no card, and includes 3 voice calls a month of up to five minutes each. That is the length of the whole warm-up, so you can use that single call as your drill 5 and your opener test in one go. Details are on the pricing page, and the sample dialogues show what a practice call looks like.
Common mistakes
- Warming up by reading your script silently. The problems appear when you speak it aloud.
- Practising only the easy opener. The drill that helps most is the one you would rather skip.
- Spending twenty minutes on it. A short routine is one you will actually repeat. Consistency matters more than length.
- Skipping it on busy days. Those are the days you are most likely to start cold and rushed.
- Changing everything daily. Keep drills 1 to 4 fixed and rotate only drill 5.
A simple way to tell it is working
Notice how the first call of your block feels over a couple of weeks. If you stumble less in the first minute, or the first conversation sounds more like your tenth, the routine is doing its job. A short note after each block, such as "opener felt natural" or "froze at the gatekeeper", is enough to guide what you rehearse next.
Related: How to practise cold calling alone, Ten-minute call practice, Stop filler words on sales calls. Free tool: Cold Call Openers.
FAQ
How long should a pre-dial warm-up be?
Five minutes is enough for most reps. With two minutes, do the voice drill and the opener.
Should I warm up alone or with a partner?
Either works. Alone, you can rehearse your wording. A partner or an AI customer adds interruptions, which is closer to a real call.
What is the most useful drill?
The one that rehearses your hardest moment, usually the first ten seconds or a blocking reply. Rotate the hard reply each day.
Can I use DIRI AI for a warm-up?
Yes. The Free plan includes 3 calls a month of up to five minutes each with no card, which fits a short warm-up.