Most of what you run should be easy. But if every run is the same speed, your body has little reason to change, and progress eventually goes flat. Intervals are the simplest way to add a bit of contrast to your week.
The word sounds technical, and the sessions can look scary on a spreadsheet. In practice an interval session is just a handful of faster efforts with breaks in between. This guide covers what that means, how hard to go, what a first session can look like, and how we do it at the club.
What is an interval session?
It is a workout built from repeats. You run hard for a set time or distance (the rep), then jog or walk easily (the recovery), then do it again. A full session might be six to ten of these pairs, wrapped in an easy warm-up and cool-down.
So the pattern is simple:
- Hard rep
- Easy recovery
- Repeat, with the same quality each time
If you have ever done a run/walk session, you have already done a gentle version of this. Intervals just turn the “run” part a bit faster and give it a plan.
Why do they help?
Easy running builds your base: it teaches your body to keep going. Intervals teach it to cope with working harder. Because you rest between reps, you can spend more total time at a quicker pace than you ever could by running fast non-stop.
Over weeks, that faster pace starts to feel less strange. Your legs get used to turning over quicker, your breathing gets used to being pushed, and your easy pace often feels easier too. You do not need to understand the physiology in detail to benefit; you just need to repeat the sessions patiently, with easy days around them.
How hard should each rep feel?
Think “controlled hard”. Not a sprint, not a jog. It should feel like work, with short, sharp breathing, but you should still be running with good form and in charge of your pace.
A few checks while you run:
- Your first rep should feel almost too easy. That is correct.
- Every rep should be about the same speed. Evenness matters more than speed.
- The last rep should be as fast as the first. If you are fading, you started too hard.
- You should finish the session feeling you could have done one more, not feeling wrecked.
If the pace falls apart halfway through, that is your body telling you the effort was too high. Next time, start slower. No one gets extra credit for a heroic first rep and a miserable last one.
Why does recovery matter?
Recovery is not wasted time. It is what lets the next rep be a good one. During it, your breathing settles and your legs get ready to go again.
Jog gently, or walk if you need to. Walking is completely fine, especially early on. The goal is to recover enough to run the next rep well, not to be completely rested. If you cannot finish a rep at the right quality because the break was too short, lengthen the break.
What types of intervals are there?
You will see four common shapes. They are all the same idea at different lengths.
- Short reps. Around 30 seconds to a minute, hard but smooth. Good for beginners, because each one is over quickly.
- Long reps. Two to five minutes or more, at a slightly lower effort. These ask for focus and patience rather than speed.
- Hill reps. Hard efforts uphill, jogging back down to recover. The slope forces good effort without needing to run fast. Our hills guide goes deeper.
- Fartlek. A Swedish word meaning “speed play”. Instead of a strict clock, you pick up the pace between landmarks, like running hard to the next lamp post and easing off after. It is relaxed and a good first step.
What does a first session look like?
Here is one example for a beginner who already runs easily for 25 to 30 minutes. Treat it as an illustration, not a prescription.
- Warm up for 10 minutes: easy jogging, then a few relaxed strides. Our warm-up guide has ideas.
- Run 6 reps of 1 minute strong, each followed by 2 minutes of easy jogging or walking.
- Cool down with 5 to 10 minutes of easy jogging or walking.
Keep every minute at the same effort. If rep 6 feels like rep 1, you nailed it. If it was harder than that, do fewer reps next time. Starting small is a feature; the build slowly guide explains why.
How often should you do intervals?
Once a week is plenty for most runners. Some experienced runners add a second session, but it is never needed to make progress. Hard days need easy days around them, so do not stack intervals on back-to-back days.
The rest of your week should stay genuinely easy, as in start easy. Sleep matters here too; see rest and sleep. If you feel sore in one spot or unusually flat, skip the session and run easy instead.
Heat changes the picture as well. In summer, shorten the reps or lengthen the recovery; the summer heat guide covers it.
How does the club do it?
Our coached interval session is Wednesday at 6:30 pm at the Al Hussein Sports City track, for members. We run in pace groups, so you are with people moving at a similar speed, and the coach is in your ear through the app, calling the reps, the pace and the recovery. You do not need to count or watch a clock. Details on the Wednesday session page.
If you have never run on a track, or you are not sure you want to commit, come to the Monday 6:30 pm Open Run at the same track. It is open to everyone; just check in with the app. It is not an interval session, but it lets you see the track, meet the group and get comfortable before you think about Wednesday. See the Monday page.
Membership is 40 JOD a month and opens soon.
The bottom line
Intervals are hard efforts with easy breaks, run evenly and under control. Keep them short at first, recover properly, and do them once a week with easy running around them. Start with something small, like six one-minute reps, and let it grow. Come try the track with us on Monday, and when you are ready, the coached session is Wednesday.
General advice, not medical advice. If pain persists, see a doctor or physiotherapist.
