His colleagues say they'll help him stay on the straight and narrow.
An Offaly teacher completed his Operation Transformation journey last night - losing more than two stone in the process.
Shane Farrell, who works in the Sacred Heart School in Tullamore, stepped on the scales to reveal a final weight of 17 stone 8 pounds after the eight week RTÉ series.
Shane started the show weighing more than 20 stone and lost 42 inches and 2 stone and 13 pounds.
Principal of Sacred Heart School, Pauline McKenna, says they'll be keeping him on the straight and narrow:
Starting Weight - 20st 7lbs
Finishing Weight - 17st 8lbs
Total Weight Loss - 2st 13lbs
Total inch loss - 42 inches
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