Carve your buns, quads, and hamstrings (plus a little bit of core) with this killer lower-body circuit courtesy of trainer Joni Ortiz.

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Power through the exercises quickly using your own bodyweight, or take it at a slower, harder pace by adding a set of dumbbells into the mix.

Model/Trainer: Joni Ortiz //  Photography: James Patrick

This lower-body circuit is great for strengthening and toning your lower body and, considering some of the largest muscles of the body can be found in your legs, you get the added bonus of serious calorie burn.

Complete 15 repetitions of each exercise with good form before moving on to the next exercise. Complete each exercise back-to-back with no rest in-between to ensure your heart rate is kept high. At the end of the circuit, rest for 30 seconds (advanced) to 1 minute (beginner), before starting the circuit again. Four rounds.