This Combo Workout Move Burns Your Triceps *and* Sets Your Lower Abs on Fire
Both of these exercises are already challenging when done solo. Skull crushers are a strength-training staple for building up your triceps, and jackknifes zone in on your core, targeting both your upper and lower abs in a way that no crunch could ever. So it's no surprise that when one of our editors recently did a skull crusher jackknife combo in a group fitness class, she was sore in the best way.
If you want to light up your triceps and core during your next workout, here's exactly how to do a skull crusher jackknife combo like a pro.
How to do a skull crusher jackknife workout combo
- Lie on your back on a mat. Hold a dumbbell straight above your body with your legs straight up toward the ceiling.
- Slowly lower your legs and arms at the same time. Your legs will hover above the mat, and your arms will stop right above your head.
- Slowly bring your arms and legs back to the starting position, pause, and lift your upper body, performing a crunch so the dumbbell meets your ankles. Perform three sets of 12 reps.
Feel like yoga? Try this five-minute flow that focuses on your core:
Arm dancing is the key to getting ballerina-strong arms, and you can start with these three moves. Then try this 5-move kettlebell workout, straight from a trainer.
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