How many of our muscles do we use regularly? © Getty Images

How many of our muscles do we use regularly?

We’re not convinced that a 5kg barbell gave him those biceps!

Asked by: Paul Leslie, Chelmsford

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Just about all of them! But our least-used muscles are probably the lumbar multifidus muscles in the lower back. Studies have shown that prolonged slumping in front of the TV can inactivate these muscles. This can lead to back pain, and once inactivated they can take months to recover.


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