You need less floor than you think

Most people put off training at home because they imagine a spare room with a rack in it. You don't need one. Bodyweight work, a kettlebell, dumbbells and a resistance band fit into a clear patch of floor about the size of a yoga mat laid out twice. What matters is not how big the room is, but how much of it you can clear for twenty minutes.

This guide gives you a few rules of thumb so you can measure that patch once and know what will fit. Then you can play with your own room below.

One idea does most of the work: your arm span

For most adults, the distance from fingertip to fingertip with your arms held out wide is close to your height. That makes it a handy yardstick. If you are 175 cm tall, you take up roughly a 1.75 m wide space when you open your arms, and roughly 1.75 m of length when you lie down. People vary, so treat it as a rough guide rather than a measurement.

From that, the floor space for common exercises works out like this:

• Lying or plank work (push-ups, planks, crunches): about your height plus 30 cm long, and shoulder width plus room for your elbows wide. The mat itself is usually the limit.
• Squats and deadlift-style hinges: roughly one metre square. You mostly move up and down, not sideways.
• Lunges: about 0.9 m wide and 1.6 m long, because one foot steps out front.
• Band rows and presses: about an arm span wide, since your arms move apart and together.
• Kettlebell swings: about a metre wide, but a clear lane in front of you of around 2 m, because the bell travels forward.
• Jump rope: about an arm span plus 40 cm in every direction, because the rope swings in a circle.

Don't forget the ceiling

Floor space is the obvious part. Height is the one people forget. Standing with your arms straight overhead, you reach about 1.3 times your height. A dumbbell overhead press needs that, plus a hand's width of safety. Jump rope needs your height plus about 35 cm for the hop and the swing of the rope. Light fittings and ceiling fans are the usual victims, so look up before you start.

Who this is not for

The numbers assume you are standing and using light equipment. If you train from a seated position or use a mobility aid, your clearances will be different. And if you have pain, an injury, a heart condition or are pregnant, check with a doctor or physio about what is safe before you start, however much floor you have.

Making the space you have

A few habits beat a bigger room:

• Pick one corner and keep it as your patch. You are more likely to train if setting up takes ninety seconds.
• Measure once, with a tape. Write down the clear width, length and ceiling height. Those three numbers are all the sliders above need.
• Look at the floor. Bare tile and polished wood are slippery in socks; bare feet or flat, grippy shoes help. A thin mat protects knees and floors.
• Think about whoever lives below you. Jumping and dropped weights travel through floors. Swap jumps for steps or slow controlled reps if noise is a problem.
• Sort exercises by space, not by ambition. Squats, rows and presses fit almost anywhere. Swings and jump rope are the ones that ask for more.

What to look for

When you plan your home training, these are the checks that matter: how much clear floor you can make in a few minutes, whether you can lie full-length on it, how high your ceiling really is, and what is within arm's reach. If a piece of equipment needs more space than you have, there is almost always a smaller exercise that trains the same thing.