Fast feet forward and back is a quick stepping drill done facing a low step. One foot rests on top of the step and the other stays on the floor, and you swap them as fast as you can while staying in control. It works the calves and the fronts of the hips and thighs and trains light, quick foot contacts. It is usually added late in ankle or knee rehab, or used as a warm-up for sport.

How to do the fast feet forward and back

Set a low, sturdy step on a clear floor and stand facing it, close enough that one foot can reach the top without stretching. A counter or rail beside the step gives you something to grab.
Place one foot on top of the step and keep the other on the floor. Rest your hands on your hips, as in the video.
Swap feet quickly: the top foot comes back down to the floor as the floor foot goes up onto the step.
Keep switching in a steady rhythm, landing softly on the front of each foot. Each knee points over your second toe, and your trunk stays upright.
Build the speed gradually, and slow down as soon as your feet start to miss the step or land heavily. Keep it a quick step, not a hop: one foot lands as the other lifts.

What you should feel

Quick work in both calves, some effort at the front of the hips as the knees lift, and your breathing speeding up. It should feel brisk and springy, not jarring.

Common mistakes

Standing so far back that you have to lean or reach for the step.
Stamping down hard instead of placing each foot.
Letting a knee drop inward as that foot lands on the step.
Leaning forward to look at your feet as you speed up.

How often

A common starting point is 3 to 5 rounds of 15 to 30 seconds, with about 30 to 60 seconds of rest after each, a few times a week. Your physio will adjust this, along with the step height and pace.

Stop and check with your physio if

Chest pain or pressure, dizziness or feeling faint, a racing or irregular heartbeat, or being far more out of breath than the effort should cause.
A sudden pop or snap at the back of your ankle or heel, a feeling that someone kicked you there, or sudden pain there after which you cannot push off or rise onto your toes on that leg. Stop, take the weight off that leg carefully and go to an urgent care center or emergency department the same day, even if you can still walk, as this can be a torn Achilles tendon.
Sharp pain in the ankle, shin or knee, an ankle that gives way, or you trip on the step or feel close to falling.

From the clinic

The video shows the drill done barefoot with nothing to hold, but for your first sessions put the step next to a counter or use the bottom stair of a staircase with a rail, so you can steady yourself straight away. Check that the step cannot slip and that nothing lies on the floor around it. Wear flat shoes that fit well and grip the floor, not socks, tights or bare feet. If you have fallen in the past year, often feel unsteady or have osteoporosis, keep one hand on the support and ask your physio before you add speed. If you are pregnant, ask your midwife or physio before you try this drill, as your balance changes as your bump grows.

Step taps (slow, with a pause on one leg) and marching on the spot are gentler ways to learn the rhythm, and fast feet side to side takes the same drill across the step. After an ankle fracture or ankle surgery, follow your surgeon's or physio's weight-bearing plan, and start this exercise only when they have cleared you. After a knee fracture or knee surgery, including a knee replacement, follow your surgeon's or physio's plan, and start this exercise only when they have cleared you. If you have had a hip replacement, get the go-ahead from your surgeon or physio before you try fast feet forward and back. Some operations limit this kind of work for the first months, so the timing depends on your surgery.

Done at full speed, this is a cardio drill as well as a footwork one. With a heart condition or high blood pressure, check with your doctor before you start. If chest pain, pressure or tightness does not ease quickly when you rest, spreads to your arm, neck, jaw, stomach or back, or comes with sweating, feeling sick, feeling light-headed or being short of breath, call emergency services straight away, as this can be a heart attack. If it eases quickly and none of these happen, get medical advice the same day, and do not exercise again until you have been checked. If you faint while exercising, call emergency services, even if you feel fine again quickly.

Written and checked by the PocketPhysio editorial team. Last updated 2026-09-26.

This page is general education, not a diagnosis or a personal treatment plan. If you have pain, an injury or a health condition, see a physiotherapist or doctor before starting new exercises.

Fast feet forward and back