Chair step-up
Muscles worked : Quadriceps, glutes · Hamstrings, balance
How to do it
- Stand in front of a low, stable chair, firmly planted on the floor.
- Place one foot fully on the seat.
- Push through that foot to bring your whole body up onto the chair.
- Step back down under control on the same foot, without dropping.
- Repeat, alternating legs.
Common mistakes
- Pushing off with the leg on the floor instead of driving with the leg on the chair.
- The knee drifting inwards on the way up.
- An unstable or too-high chair: check that it does not tip.
Where you should feel it
The quadriceps and glute of the driving leg, both going up and coming down. If you mostly feel the calf of the leg still on the floor, you are pushing off with it instead of driving with the top leg.
Range of motion
Rise to full extension of the supporting leg, then lower until the foot touches the floor without transferring your weight onto it. Step height sets the difficulty: mid-calf to begin, knee height for demanding work.
Tempo and breathing
One to two seconds up, two to three seconds down. The controlled descent is the most useful and most often rushed part — it is what reproduces going down stairs.
What works, precisely
The quadriceps of the leg on the step extends the knee, the gluteus maximus extends the hip. The gluteus medius stabilises the pelvis in single-leg stance, stopping the opposite hip dropping. The calves contribute to the final push.
Movement mechanics
A unilateral closed-chain hip and knee extension against gravity, over the full height of the step. It reproduces the stair-climbing action exactly — one of the rare exercises whose carry-over to daily life is literal.
Benefits
- Directly reproduces an everyday action: climbing stairs, a kerb, or getting into a high vehicle.
- Loads one leg at a time, doubling the relative load with no equipment at all.
- The lowering phase trains eccentric control, precisely what is missing when going down stairs becomes hard.
Adapt and progress
- Easier : Choose a lower step and keep one hand for balance.
- Harder : Use a higher step, slow the descent, or pause at the top on one leg.
- Move on when : When ten repetitions per leg go by with no hand support and no push-off from the floor leg, move up a level.
Precautions
The stability of the support is non-negotiable: a chair that slides or tips makes this exercise dangerous. A stair step is often the better choice.