Why are Russian twists so hard?

What are the main problems with this Russian Twist exercise? “The first issue is compression. Staying in that half sit-up position requires a massive contraction of the abdominals and hip flexors, which in turn produces excessive compression of the lumbar spine . “The second issue is flexion.29 Eki 2020

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Why are Russian twists so hard?

What are the main problems with this Russian Twist exercise? “The first issue is compression. Staying in that half sit-up position requires a massive contraction of the abdominals and hip flexors, which in turn produces excessive compression of the lumbar spine . “The second issue is flexion.29 Eki 2020

Read more