Dumbbell Leg Curl

What you'll gain

• Builds hamstring size through direct knee-flexion isolation.

• Balances out quad-dominant leg training with targeted hamstring work.

• Trains the hamstrings without needing a leg curl machine.

Step-by-Step Instructions

1. 1

   Lie face-down on a bench or the floor with the legs straight and a dumbbell ready at the feet.

2. 2

   Have a partner place a dumbbell vertically between your feet, or set it carefully on your own.

3. 3

   Squeeze the feet together hard around the dumbbell to lock it in place for the full set.

4. 4

   Curl both heels up toward your glutes by bending only at the knees, keeping the hips pressed down.

5. 5

   Squeeze the hamstrings hard at the top with the lower legs near vertical, pausing briefly.

6. 6

   Lower the dumbbell under control over 2 to 3 seconds back to a fully straight-leg position.

Common Mistakes

• Lifting the hips off the bench to use momentum instead of curling cleanly with the hamstrings.

• Letting the dumbbell slip between the feet by relaxing the squeeze mid-rep.

• Rushing the lower portion and dropping the weight back to the start, missing most of the muscle tension.

• Loading too heavy, which forces broken form and risks dropping the dumbbell on the floor.

About This Exercise

The dumbbell leg curl is a prone hamstring curl performed by lying face-down and squeezing a single dumbbell between the feet, then curling the heels toward the glutes. It directly trains the hamstrings through knee flexion — the same pattern as a machine leg curl — without requiring any specialized equipment. For app builders, this is the hamstring isolation to ship for home-gym programs and any track designed around minimal equipment. It belongs in leg-day flows, glute-and-hamstring blocks, and any beginner program that wants to balance out the quad-dominant work. It's also a useful substitute clip for coaches who want to write hamstring isolation into a program without assuming the user has access to a leg curl machine.

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