Can I use this for interval training?

Yes, and it works best if you draw one movement and keep it for the whole session. Changing movement every interval turns the session into a test of coordination rather than of conditioning.

How do I know if something is low impact?

The list does not label it, so use your own judgement: anything where both feet leave the ground repeatedly is high impact, which on this list is most of it; shadow boxing is the gentlest thing here.

Cardio Exercise Generator

Suggests a cardio exercise — jumping jacks, burpees, high knees and similar heart-rate-raising moves — for a quick burst between other exercises.

Seed (optional)

The same word, at the same settings, gives the same result. It goes into the address when you generate, so a copied link opens with the word in the box. A seed is for repeatability, not secrecy.

Don't repeat what I've already seen

Your result will appear here.

What this generator does

Draws from movements that raise the heart rate and keep it there, as opposed to the strength generators next to it, which draw from movements done in sets with rest between.

What you'll get

This generator draws from a hand-checked list of 10 entries. Here is a spread of 6 of them, so you can see the style before you generate:

Jumping jacks
High knees
Mountain climbers
Skipping (with or without a rope)
Shadow boxing
Jump rope double-unders

A fixed sample of the list, not a live draw — your own results are picked at random from all 10, without repeating until the list runs out. Original HEKNO-curated cardio-exercise list. Last reviewed 2026-07-25.

How to use this tool

Press generate for an exercise.
Generate again to build an interval circuit.

Understanding the controls

Seed: A word typed here brings back the same cardio movement, out of the ten mixing sustained and short-burst options. Drawing with a word puts it in the page address, so a saved link opens with the word in the box and the button returns the first movement, at the same intensity.

Worked examples

A generated movement: Burpees — one of ten movements the list draws from, mixing ones you can sustain for minutes with ones only sustainable in short bursts.

Common use cases

Building a cardio circuit
Quick heart-rate-raising bursts
HIIT-style interval training

How this generator works

The list mixes movements you can sustain for a long time with ones that are only sustainable in short bursts, because those are different training entirely. What you draw tells you which kind of session you are about to do more than the name of the movement does.

Limitations and good to know

No duration or intensity is set. The same movement is a warm-up or an interval depending entirely on how hard and how long you go.
Impact varies a great deal across the list and is not filtered. Some movements are hard on the knees and some are not, and nothing here can tell which of those suits a particular pair of knees.
Equipment is not considered. A skipping rope is on the list twice — once as optional, once for double-unders — and you may not have one.

Practical tips

Build up duration before intensity if you are returning to training after a break.
Pair a generated cardio movement with the warm-up generator rather than starting cold.

Entries are chosen with your browser's cryptographic random number generator, so every entry on the list is equally likely. How Generate Random works.

Not personalised fitness or medical advice — check with a qualified professional before starting a new exercise routine.

Frequently asked questions

Can I use this for interval training?: Yes, and it works best if you draw one movement and keep it for the whole session. Changing movement every interval turns the session into a test of coordination rather than of conditioning.
How do I know if something is low impact?: The list does not label it, so use your own judgement: anything where both feet leave the ground repeatedly is high impact, which on this list is most of it; shadow boxing is the gentlest thing here.