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Warm-up, why bother?

Updated: Oct 19, 2021

I can probably count on one hand the number of patients I see in clinic every week who actually do a proper warm-up before they exercise. I suspect the main reasons for this low number is 1. that they’ve been able to get away with not warming up and avoided injury until now and 2. that they don’t actually understand why a warm-up is important.

This article is the first of two about warming up. You may also be interested in reading about what the elements of the perfect warm-up programme are.

Why should you warm-up before running or doing sport?

In this article I’ll discuss:

  • The benefits of a thorough warm-up routine

  • Getting the range you need

  • Prepping your muscles

  • Activating your nervous system

The benefits of a thorough warm-up routine

The main aim of warming up before sport is to prepare yourself mentally and physically for your training or race/match.

There is strong evidence that a thorough warm-up routine can prevent injuries in all parts of the body. The FIFA11+ warm-up programme that was developed for football has been shown to decrease the total number of injuries a team racks up in a season by up to 30% while it can decrease severe injuries by 50%!

Research done in rugby (school level as well as adult) has shown that you can even reduce the number of concussions players get if you warm-up properly.

You’ll notice that I use the words “thorough” and “properly” in the paragraphs above. Not all warm-up routines are equal. Running slowly for the first 5 minutes of a run or doing a quick jog around the pitch before you play football does not count as a warm-up! It has to include specific types of exercises to be effective and I discuss these in detail in the second article of this series.

A second benefit of warming up is that it improves your performance. Researchers have found it can improve a wide variety of performance markers including sprint times, jump height, agility skills and balance to name but a few.

This is because a well-designed warm-up programme prepares your joints, muscles and nerves for exercise and I’ll discuss exactly how it does this in more detail below.

Getting the range you need

A good warm-up routine will always start with gentle aerobic exercise that improves the viscosity of your joint fluid which helps them to move better.  It further includes dynamic stretches that take your muscles and joints through the full range that you need for your sport.

The range of motion that you need in your joints and limbs to effectively do your sport will very much depend on what sport you do. Think for instance of a gymnast vs. a sprinter.

The gymnast will require a large range of motion in their hips and may even have to do the splits during their routine. The sprinter only requires the range of motion that will allow them to swing their legs freely through the full running cycle and excessive flexibility may even negatively impact on their performance.

The warm-up routines and goals for these two athletes will be very different. But they will both have to ensure that they achieve the full range of motion that they need for their individual sports before they start training or compete.

Prepping your muscles

A good warm-up will increase your core temperature, muscle temperature as well as the blood flow to your muscles which rewards you with stronger and more powerful muscle contractions.  It’s easy to see how this will result in better performance.

There is strong evidence that doing a comprehensive warm-up routine 2 to 3 times a week not only leads to better performance on the day but also increases your muscle strength over time.  How it does this will make more sense when you read the article about the components of the perfect warm-up routine.

Activating your nervous system

Think of your nervous system (brain and nerves) as the captain of a ship (your body). The ship may be nice and strong but if the captain is drunk or passed out it will not move in its intended way and may even crash (get injured).

An important aim of a warm-up routine is to wake your nervous system up and make sure that it is fully alert and ready for exercise. Your nerves have to make sure that your muscles fire at the right time and intensity and that your limbs move in the correct sequence.

A good example of how switched off muscles (due to the nerves not firing properly) can cause injury is when your glutes (muscles in your bottom) does not activate properly, allowing the knee to turn in while running. This can cause any number of injuries in the hip, knee or ankle. One of the top causes for switched off glutes is when you sit for long periods of the day. I've previously written about how you can wake up and strengthen your Glute Max and Glute Med.

Your nervous system is also constantly feeding back information to the brain about where your limbs are in time and space.

Have you ever wondered how you can manage to run down a flight of stairs without really looking at them and not trip? This is thanks to proprioception. Proprioception or position sense refers to your brains ability to know exactly where every part of your body is without having to look at it. A good example of what can happen when the brain gets it wrong is when you misjudge the height of a step (as either lower or higher) and stumble or fall.

Poor position sense predisposes you to a variety of injuries. The good news is that there is strong evidence that doing a structured warm-up routine can wake your ship’s caption up and lead to improved static and dynamic balance, agility skills, core and hip muscle activation as well as core and leg stability.

Now that you fully understand the benefits of warming up, let's take a look at what a thorough warm-up routine should include.

Need more help with your injury? You’re welcome to consult one of the team at SIP online via video call for an assessment of your injury and a tailored treatment plan.

About the Author

Maryke Louw is a chartered physiotherapist with more than 15 years' experience and a Masters Degree in Sports Injury Management. Follow her on LinkedIn or ReasearchGate


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