As Operation Transformation reaches the halfway point, this year's five leaders - Killian Byrne, Adrian Brereton, Natalie Cox, Kayleigh Yeoman and Grace Batterberry - have lost a combined weight of 6 stone 3 pounds to date.

Killian Byrne from Rathfarnham in Dublin was 19st 4.5lbs and now weighs 17st 6lbs.
Total Weight Loss to Date: 1 stone 12.5lbs

Adrian Brereton from Edenderry, Co Offaly was 18st 11lbs and now weighs 17st 4.5lbs.
Total Weight Loss to Date: 1 stone 6.5lbs

Natalie Cox from Crumlin in Dublin was 16st 5.5lbs and now weighs 15st 6lbs.
Total Weight Loss to Date: 13.5 lbs

Kayleigh Yeoman from Corbally, Co Limerick was 15st 9.5lbs and now weighs 14st 8lbs.
Total Weight Loss to Date: 1 stone 1.5lbs

Grace Batterberry from Castletownroche, Co Cork was 13st 4.5lbs and now weighs 12 stone 7.5lbs.
Total Weight Loss to Date: 11lbs

Total Combined Weight Loss to Date: 87 pounds = 6st 3lbs

To follow the leaders' progress, food and exercise plans, visit:

The series continues on RTÉ One every Wednesday at 8pm until February 22 (past episodes available on: and you can listen to additional interviews on The John Murray Show on RTÉ Radio 1 Monday to Friday 9-10am (