Should you do Russian twists fast or slow?

This exercise is simple, but you’ll feel the burn in your upper abs after just a few reps. You can also add weights or a medicine ball to make this more challenging. Sit on a yoga mat with your butt on the ground, your knees bent, and your feet flat on the floor.2 Eki 2019

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This exercise is simple, but you’ll feel the burn in your upper abs after just a few reps. You can also add weights or a medicine ball to make this more challenging. Sit on a yoga mat with your butt on the ground, your knees bent, and your feet flat on the floor.2 Eki 2019

Read more