In the third episode of the new series, Davina meets father of three Chris Peters, who has set himself the challenge to lose 7 stone. The plumber from West Sussex has decided its time to get fit for the sake of his family, but will he be able to achieve his goal?Lewis Burns, 16 from Glasgow is hoping that this is the year he will finally be able to speak again. After diagnosed with the heart condition ‘sudden death syndrome' Lewis tragically suffered a heart attack aged just 10, as a result he suffered damaged to his windpipe. With his windpipe almost completely closed, Lewis hasn't spoken for six years but has now decided it time to undergo surgery that will reopen his windpipe and allow him to talk again. Will Lewis finally gain his voice back?Carol Ubaldi, a 54-year-old from Cardiff is hoping she can finally put an end to years of yo yo dieting. The catering manager is hoping she can lose 7 stone, but will she be able to finally achieve her target weight?Conrad Andrews from Halifax has had a fear of the dentist since his teens after suffering a traumatic experience. The repercussions have meant that the 33-year student hasn't visited a dentist in 20 years and is now constantly embarrassed by his teeth. Will Conrad be able to face his fears and finally get a smile he is proud of?Kathryn Mallery, 34 and Chris Chapman 37 from London are hoping to complete their family with the help of a surrogate. Diagnosed aged 7 with a rare disease that means she is at constant risks of tumours, Kathryn, whilst pregnant with her first child, developed a tumour causing her to go blind in one eye. Told that she could potentially lose her sight completely if she fell pregnant again, Kathryn and Chris are hoping a surrogate will help them finally be able to complete their family.