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Jack curls will hammer your biceps and forearms, and jack overhead presses will fire up your shoulders, triceps, and core, Gaddour says.
Both exercises hit your glutes as you push out against the resistance band each time you jump your feet out.
Put the two moves together for a fantastic cardio workout: Do 20 seconds of jack curls, then rest 10 seconds. Do 20 seconds of jack overhead presses, then rest 10 seconds.
That’s 1 round. Do 4 rounds to complete 1 cycle. Do 3 to 5 cycles.