Many start-ups are already capping their meetings to a maximum of 30 minutes. In some cases, people are limiting meetings to 15 minutes. For Richard Branson, they’re 10 minutes.

So, why are shorter meetings more productive? It’s simple: there’s less time for anything else.

Here are 7 reasons why shorter meetings boost productivity

1. More pressure to get through the agenda

If attendees can see they only have 20 minutes to get through a meeting, they simply won’t waste time. They’ll get to the point quicker, because there’s no time for anything else.

2. More reason to prepare beforehand

If your meetings are short, you don’t have time at the beginning to get things sorted that should have been prepared in advance.

This is where having a meeting agenda is key.

Ideally, agendas will:

• Set expectations for the meeting

• Include everything that needs to be covered

• Outline an overall objective for the meeting

• Include contributions required of attendees (these might include work updates, visual presentations, data that should be collected prior to the meeting, or even something they should read beforehand)

If you slash your meeting lengths, chances are that everyone will come prepared because they have no time at the beginning of the session to do so.

3. You can hyper-focus on a single topic

If you only have 20-minute meetings, you’re not likely to cram 7 topics into each 20-minute time block.

Instead, you’re more likely to focus on one topic at a time. And this means you can hyper-focus. This results in higher quality outcomes—instead of skimming the surface of many topics, you’re able to deep-dive into one.

4. Fewer distractions and increased engagement

While there are conflicting studies on the average length of adult attention spans, the shorter the meeting, the less time available to become distracted and tune out.

When attendees don’t tune out, they engage—even if it’s as small as a head nod.

5. Reduce burn out

A Microsoft study found that back-to-back meetings increase stress on the brain.

But when your meetings are shorter, you have more time to schedule breaks in between, alleviating stress and reducing burn out.

That’s a win for mental health and team morale.

6. Less overwhelm

When you have less time, you use it more efficiently. This means less clutter. Fewer slides, handouts, and supporting material avoids ‘cognitive overload’. This reduces the chance that people will become overwhelmed and/or tune out.

If you do need to share materials, consider:

• If you can provide them in advance for attendees to absorb prior

• If they’re actually necessary

• If you can narrow down to the single-most important slide/chart/table

7. Less opportunity for clients to ask for free advice

When you set a short and defined meeting time limit for your client calls, there's less time for clients to ask questions that ultimately lead you to providing free advice.

Setting clear expectations of meeting objectives, length, and agenda are critical in ensuring your clients respect your time.

Experiment to find the sweet spots

It’s important to understand that there isn’t one single length of time that is optimal in achieving all these benefits. You’ll need to experiment with different meeting lengths until you find what works best for you, your team, and your clients.

Lengths will vary depending on the type of meeting, who is involved and your objectives. But underscoring your decision making when setting these meetings should be: less is more.