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Make This One Change to Your Workout to Tighten Your Butt and Tone Your Legs

You can do it all in just 15 minutes.

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One-sided relationships are rarely healthy—unless you're talking about unilateral training. Supporting weight on just one side of your body at a time offers benefits that evenly loaded strength-building moves inevitably miss.

"When you work each side independently, you're able to laser in on just those muscles, so you can perfect your technique, spot weaknesses, and really control each rep," says certified strength and conditioning specialist Mike Robertson, president of Robertson Training Systems in Indianapolis.

And while your legs, butt, shoulders, and back are the main stars of this routine, they're not the only ones being challenged. "Your core is working twice as hard to correct a rotational pull from the weighed-down side," says Robertson, who created the workout here.

Two or three times a week, complete this circuit using a kettlebell ("It allows for a more natural hold than a dumbbell," says Robertson). Begin with the first exercise and rest for 30 seconds before moving on to the next. Repeat two times for a total of three rounds.

1. Offset Kettlebell Front Squat

workout for toned arms legs butt
Beth Bischoff

Stand with your right elbow bent, your hand holding a kettlebell in front of your shoulder, feet slightly more than hip-width apart (a). Bend your knees and push your hips back until your thighs are parallel to the floor (b). Reverse movement to return to start. That's one rep; do eight to 12. Repeat on the other side.

RELATED: Why You’re Not Getting Any Stronger No Matter How Much You Work Out

2. One-Arm Military Press

workout for toned arms legs butt
Beth Bischoff

Stand with your right elbow bent and out to the side, your hand holding a kettlebell just above shoulder height (a). Brace your core and press the weight overhead, fully extending your right arm (b). Control the weight as you lower it back down to your shoulder. That's one rep; do eight to 12. Repeat on the other side. (Torch fat and get fit in just 18 minutes with Women's Health's All in 18 DVD!) 

3. Sprinter Step-Up

workout for toned arms legs butt
Beth Bischoff

Hold a kettlebell in your right hand at shoulder height, elbow bent, then place your right foot on a low bench (a). Push through right leg to step onto the bench as you lift your left leg in front of you, knee bent 90 degrees (b). Step back down to return to start. That's one rep; do eight to 12. Repeat on the other side.

RELATED: 7 Reasons Your Butt Isn’t Changing No Matter How Much You Work Out

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4. Unsupported Kettlebell Row

workout for toned arms legs butt
Beth Bischoff

Hold a kettlebell in your right hand and, keeping a flat back and slightly bent knees, bend forward at the hips until your torso is almost parallel to the floor (a). Brace your core as you pull the weight to your side (b). Lower it to return to start. That's one rep; do eight to 12. Repeat on the other side.

This article was originally published in the November 2016 issue of Women's Health, on newsstands now.

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Marissa Gainsburg
Marissa Gainsburg is the Features Director at Women's Health, where she oversees the magazine's news-meets-trends Warm Up section and Love & Life section. After receiving her journalism degree from the University of Florida, Marissa has spent the past eight years in NYC with her dog Bentley, writing and editing fitness, nutrition, health, sexual health, mental health, relationship, and travel content. She's held previous positions at Self, Allure, and Cosmopolitan.
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