Families in Lincolnshire - where childhood obesity is above the national average - will be offered ten-week courses to tackle the problem.
East Lindsey District Council will hold fitness and healthy eating lessons.
A report published earlier this month showed more than a quarter of children in Lincolnshire aged between 4 and 5, are now classed as overweight or obese.
The problem is also slightly more prevalent in boys than girls.
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Hundreds of parents and children were special guests at a party to celebrate the 25th anniversary of the Leicester Fertility Centre today.
Ahead of the conference, calls are growing for Midlands regions to have their own devolved powers to match those on offer to Scotland.
After a cool start, Sunday looks set to be a dry and bright day, with sunny spells.