Sharon blitzes weight battle
Now she can knock off a 5km run in half-an-hour and a 30km bike ride in an hour-and-a-half.
And the elation she feels at her achievement pales when she sees the look of pride on the faces of her children.
Mrs Kreymborg, 33, a Ballina mother of five, shed 19.1kg in 12 weeks during the Ballina Body Blitz program, run by fitness coach Carlos Dobson.
When she started the program with 20 other people in February, Mrs Kreymborg weighed in at 105.5kg, but now tips the scales at 86kg.
During a gala event at Ballina's Ramada Hotel on Saturday to mark the end of the program, Mrs Kreymborg was crowned winner and presented with $5000.
She also won a bicycle, a stay at the Ramada, and other prizes including gift vouchers to clothing and sporting shops and to a perfumery.
"I am amazed. I still can't believe it, Mrs Kreymborg said.
"I was so tired of being overweight and I did not know what to do about it.
"I couldn't even run after my young son if he were to run out on to the road.
"I was missing out on so much."
During the program, Mrs Kreymborg said she learnt that eating healthy, fresh food was important, but exercising was more important.
"I have lost weight before, but I have never felt this good," she said.
"Once I had children my fitness level went down and I felt older.
"I just thought that was how you were supposed to feel.
"Now I feel better than when I was in my 20s because my fitness is better and it has changed my life.
"On the first day of the program I thought fitness coach Carlos Dobson would make me run and I was scared, but he took it slow and he really believed in us."