A study published in the Journal of Strength and Conditioning found that the plank provides 100% activation of your six-pack muscles whereas crunches only engage 64%. Regular plank practice means your ...

Engage your core, lift your glutes and squeeze at the top for 10-12 repetitions. Get into a plank position using your desk or for more of a challenge go onto the floor. With dumbbell in one hand, wrap ...

Another key to working your abs is staying actively challenged throughout the timeframe, which will not happen when you're only doing a few types of crunches and planks. You can progress some ...

Set a timer, then run through circuits of bodyweight moves like planks, crunches, and leg lifts until the clock hit zero. As the conversation on ab training has changed in recent years ...

Crunches have had their moment ... Switch sides and repeat, moving with control. The plank to downward dog reach blends the isometric strength of a plank with the dynamic stretch of downward dog.

Use obliques to return upright. Avoid leaning forward/backward. High plank. Dumbbell outside left hand. With right hand, reach under to drag dumbbell across to other side. Keep hips stable — no ...

That's one rep. Keep your hips steady," Willis recommends. Next up, side plank crunches. "In a forearm side plank, lift your top arm overhead. Twist and reach it under your waist as you crunch in, ...

One set is 12 reps. Get into a plank position on the floor: Your hands should be on the mat with your shoulders directly above them, legs extended straight back behind you, toes on the mat ...