India, Feb. 10 -- Shilpa Shetty's age-defying body is due to her strict exercise regime. The actor, who turns 50 this year, has shared a glimpse of her workout routine for her ripped abs. If you are feeling particularly fit today, take on Shilpa Shetty's 'impossible sit-up' challenge to test your core strength. Also read | Shilpa Shetty reveals her 'simple yet effective' workout for staying fit

The actor took to Instagram on Monday to share a video of her abs workout and wrote in her caption, "ABS-olutely worth it! Challenge thrown to you. PS: Attempt only if you have a strong core."

Shilpa is right to warn her followers, as starting slow is the best policy if you are not regular with sit-ups. To be safe, begin with a manageable number ...