Adding a medicine ball to this core exercise increases resistance and quickly makes you stronger. The twisting movement targets your obliques, and the suspended leg position improves lower-body stabilization.
Equipment
Medicine ball
Primary muscle group
Abdominals
Secondary muscle groups
lower back, legs, shoulders
1 Sit on the floor and hold a medicine ball at your chest with both hands. Bend your knees and raise your feet until your shins are parallel to the floor. Lean back and engage your core to stay upright.
2 Exhale and draw your navel towards your spine. Use your core to rotate your upper body, bringing the medicine ball to your left side.
3 Inhale and return to the centre, then exhale and rotate to your right. Inhale and return to the centre again. That is one rep. Alternate rotating to each side for the number of reps given in your workout, without letting your feet or back fall.
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Bodyweight Russian twist
Perform the exercise as described, but without a medicine ball. Clasp your hands together. You can also rest your heels lightly on the floor.