A Rude Awakening for 'Biggest Loser' Contestant

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After years of failing to understand the consequences of her extreme weight, The Biggest Loser contestant Jennifer is about to get a terrifying wake-up call.

With trainer Bob Harper at her side, Jennifer takes a good hard look at the shocking excess of body fat she carries – At least 155 pounds, to be exact.

In tears, the doctor illustrates to the over 300 lb woman an X-Ray of her clearly unhealthy form, explaining she is on the fast track towards incurable diabetes.

An all-new episode of The Biggest Loser airs tonight on NBC.

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